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World briefing — August 25, 2026

As of 2026-08-25

What changed since yesterday

World trends

War & Conflict

The global conflict landscape on 24-25 August is marked by rising tension emanating from the Middle East. After the US formalised its second round of sanctions on Iran, dubbed "Economic Outcast," the collapse of the Iranian rial and soaring prices deepened, and Iran threatened attacks on Hormuz tankers and the targeting of Gulf states, raising the possibility of escalation again. Linked to this, Yemen's Houthi rebels continue a blockade offensive in the Red Sea and Arabian Sea, including a missile attack on a Saudi tanker, taking on the character of a proxy war against US pressure on Iran. In Gaza, despite the October 2025 ceasefire, sporadic Israeli strikes continue and deaths are accumulating despite US calls for restraint, while Lebanon has been relatively calm since mid-August. Ukraine was again hit by Russian drone and missile attacks on 24 August, its 35th Independence Day, with the stalemate on three eastern axes continuing, and visits to Kyiv by European leaders reaffirmed Western support. In Africa, two opposing trends coexist: in Sudan the RSF is capturing border strongholds in Blue Nile state one after another and widening its routes of advance into the Nile basin, while in eastern DRC the first ceasefire verification team has actually arrived in Minembwe after the Swiss-mediated roadmap agreement, a sign that the M23 conflict may be entering a negotiating phase. In the Sahel the fuel blockade of Bamako continues as the humanitarian crisis deepens with JNIM's widening offensive, and in Myanmar civilian casualties continue from the junta's bombing of monasteries. In the Western Hemisphere, a raid by the Kenscoff gang in Haiti killed 30, heightening insecurity ahead of next year's general election, while Venezuela continues a relatively stable transition after Maduro's arrest, including the release of political prisoners. Afghanistan-Pakistan and China-Taiwan remain "frozen" under a ceasefire and military tension respectively. Overall, the core axes of the week are "the US shift to economic warfare against Iran" and "the opposing trajectories of two African conflicts." Sanctions on Iran have raised the risk of escalation without lowering the intensity of fighting itself, while the Red Sea, Gaza and Lebanon are all interlinked through the Iranian axis, so a single event now has greater potential to spread across multiple fronts. In Africa, Sudan's military deterioration contrasts with diplomatic progress in the DRC, and the Sahel is heading towards a humanitarian crisis severe enough to threaten the functioning of the state itself. In the Western Hemisphere, Haiti and Venezuela showed contrasting trajectories, the collapse of security and a gradual transition respectively. The Ukraine war and Myanmar's civil war maintained wars of attrition with no clear turning point.

Geopolitics & Diplomacy

US pressure on Iran entered a new phase on 24 August. Treasury Secretary Bessent announced sanctions that afternoon, dubbed an 'economic D-Day', targeting networks of brokers, companies and shadow-fleet vessels operating in the United Arab Emirates, Hong Kong, China, Singapore, Switzerland, Europe and elsewhere. The aim is to cut off the transport of Iranian oil and the flow of its proceeds to the Quds Force of the Revolutionary Guards. Notably, however, Washington chose a diplomatic-persuasion approach, giving countries a grace period to change their behaviour rather than immediate full enforcement. China, the largest buyer, taking about 90% of Iranian oil, was not named directly, but Bessent warned that 'no one can evade US sanctions', effectively putting it among the targets of the pressure. Iran's leadership tried to play down the threat while hinting at retaliation against countries that cooperate with the sanctions, and the president's remark that 'we must end the war from a position of strength' is read as a paradoxical acknowledgement that economic pressure is working. No official reaction from Western allies, including in Europe, had been seen as of 25 August, so the impact of the sanctions on Iran's economy and the diplomatic fallout among third countries depend on reactions over the coming days.

The US-Canada trade war has entered a phase of real escalation. After the talks collapsed, Prime Minister Mark Carney reaffirmed that Canada will impose retaliatory tariffs from 8 September on steel, dairy, household appliances, agricultural equipment, pulp and paper, electronics and more, making clear the principle of matching 'dollar for dollar' the US tariffs of up to 50%, worth about $20 billion. As of 24-25 August, however, the specific rates remain undisclosed, and the Canadian government says only that it will announce details 'in the coming days'. The lack of set rates could be strategic ambiguity meant to leave room to resume negotiations, or a sign that coordination of domestic industry interests is delayed. With about two weeks left until 8 September, the timing of the rate announcement is itself the key thing to watch in the next phase.

China's diplomacy is splitting into two tracks. On one hand, preparations for Xi Jinping's White House visit, planned for September (within six weeks), are still judged to be in disarray. According to a report by the South China Morning Post last updated on 17 August, there is no department in charge of organising the visit within the Trump administration, and an irregular structure in which the Treasury Department and the US Trade Representative, rather than the State Department, lead preparations is slowing the drafting of summit agreements. On the other hand, China is steadily widening its diplomatic foothold in Southeast Asia. On 22 August it launched a comprehensive strategic dialogue with Indonesia and agreed to expand trade to more than $167 billion, with energy and critical-minerals cooperation also discussed. This shows China's dual strategy: top-down diplomacy in the form of a US-China summit and bottom-up diplomacy of expanding working-level regional partnerships, pursued simultaneously.

Three trends run in parallel in East Asia's security landscape. Reports between 17 and 21 August concentrated on the real blow to Japan's semiconductor and EV supply chains from China's rare-earth (dysprosium and terbium) export controls, including an 82% year-on-year plunge in dysprosium raw material imports in the first half. The limits of 15 years of effort to diversify supply chains away from China have thus been exposed. South Korea is preparing to present a specific target year at the October Security Consultative Meeting (SCM) with the US, towards its goal of transferring wartime operational control (OPCON) within the president's term, and conditions are in place with the shortened UFS exercise ending and verification of initial operational capability (FOC) completed. In Taiwan, the legislature continues to deliberate the 2027 defence budget (NT$1.1225 trillion, 3.01% of GDP). North Korea, after three missile launches on 6, 12 and 20 August, was met with three consecutive days of silence from state media, effectively rejecting Trump's overtures for dialogue, and its next move remains hard to predict.

In the Middle East, a shift in Western attitudes towards Israel can be detected. The government of UK Prime Minister Andy Burnham, who took office in July, has signalled a new policy on Israel in September including a ban on imports of settlement goods, along with a review of 30 arms exports covering F-35 parts and 8,630 munitions items. The Netherlands and Spain have already banned settlement imports and Ireland is pursuing one, so Britain's joining shows the spread of a harder line on Israel in Western Europe. By contrast, the EU-level sanctions package has stayed at the 'in preparation' stage with no further progress since the limited measures of 28 May against four organisations and three individuals, leaving the UK ahead of the EU. Meanwhile, the Mecca joint defence pact among Saudi Arabia, Turkey and Pakistan continues to expand cautiously, with Egypt left out of the signing despite taking part in four-way consultations, and Saudi Arabia continues to play the role of balancer against Iran.

Elsewhere, existing trends largely continued steadily. In Brazil, ahead of the 4 October election, President Lula maintains a narrow lead over Flavio Bolsonaro, while Venezuela remains in the early stages of normalising relations with the US under the acting administration of Delcy Rodriguez. Nigeria deepened defence and counterterrorism cooperation with the US through a working-group meeting in Washington on 13-14 August, and Australia renewed a joint vision statement on defence cooperation with Vietnam on 11-12 August, continuing its signalling of containment of China. Poland maintains a constant fighter-jet alert posture over Russian strikes on Ukraine, and tensions over Greenland involving Denmark have eased with no clear progress. Overall, the major events newly confirmed between 24 and 25 August were concentrated in two: US sanctions on Iran and the escalating Canadian tariffs. The rest of the world kept to its existing trajectory, in a holding phase heading for the next milestones: Canada's tariffs taking effect on 8 September, Xi Jinping's visit to the US in September, the UK's new Israel policy in September, the US-South Korea SCM in October and Brazil's election on 4 October.

Finance & Economy

Monday 24 August was the first day since the Friday 21 August close on which actual regular-session closes were set in both the US and South Korea, clearing the first hurdle of this week's packed event calendar. Treasury Secretary Bessent formally announced the previously flagged "largest ever" sanctions on Iran under an operation dubbed "Economic Outcast", targeting networks of brokers and ghost fleets spanning the UAE, Hong Kong, China, Singapore, Switzerland and Europe, and the Iranian rial plunged past 2 million rials to the dollar immediately afterwards. WTI and Brent crude, however, fell on profit-taking after a two-week rally, making it a paradoxical day on which sanctions uncertainty prompted waiting rather than buying. On Wall Street, the S&P 500 (-0.28%) and the Nasdaq (-0.76%) fell on weakness in chip stocks such as Nvidia, while the Dow held up at +0.26%; Treasury yields slipped slightly on talk of Treasury buybacks using its general account, so risk assets and safe havens sent mixed signals.

South Korean stocks took the clearest single-country, single-event shock of the week. Samsung Electronics plunged 8.79% as disappointment poured out over the omission of share buybacks from its 21 August shareholder-return plan (₩90-110 trillion), dragging the KOSPI down 3.12% to 6,696.96 and through the 6,700 level. Interestingly, the won strengthened further the same day, with USD/KRW falling to ₩1,383.2, so the equity and currency markets decoupled and moved in opposite directions. Three days before the Bank of Korea's 27 August rate meeting, hike and hold camps remain evenly matched, while the KOSDAQ rebounded 1.42% on strength in battery makers and net buying by foreign and institutional investors, widening the large-cap/small-cap gap further.

The dollar-yen pair gave mixed signals. The yen was nearly flat at ¥158.889 per dollar at the Tokyo close, but reports that the probability of a BOJ hike in September had jumped from 61% to 80% the same day led some outlets to say the yen was "approaching 160". The BOJ is reportedly even considering shortening its hiking interval from the existing six months to three to four months, so the pace of monetary normalisation, along with Japan's 10-year yield (2.945%, a 30-year high), has become this week's fastest-moving variable. EUR/USD was effectively flat at $1.168, with French fiscal instability and a slight fall in US yields offsetting each other.

In commodities, geopolitical risk and market sentiment moved in opposite directions. Despite the clearly bearish news of the Iran sanctions announcement, WTI (about $85.3) and Brent (about $91.9) fell, which appears to reflect a combination of profit-taking after a two-week rally that began before the announcement and relief that the uncertainty had passed. Still, if the sanctions actually squeeze Iran's crude exports and shipping networks, oil retains the potential to rebound on reduced supply, so today's decline and structural upward pressure coexist in a contradictory phase. Gold prices varied widely by outlet, between $4,600 and $4,710, but all agreed on the direction: a third straight weekly gain and a level close to the all-time high.

Crypto was again the only asset class trading, and rising, in real time this week. Bitcoin extended its weekend rally and traded in a $77,000-79,000 range as of the New York morning on 24 August, with Ether also strengthening. That risk appetite stayed alive on a day when Treasury-yield uncertainty and geopolitical risk both came to the fore suggests that the market, ahead of Jackson Hole, is still betting on an easing path for monetary policy.

Emerging markets and other regions largely kept their existing policy stances, watching this week's "three big events" (the Iran sanctions, Nvidia's earnings, and Jackson Hole plus the BOK meeting). China again rejected a US request to cooperate on sanctions and kept its LPR on hold for a 15th month; Brazil continued its fourth straight Selic cut and its presidential race; Turkey kept rates at 37%; and Argentina continued to show austerity gains alongside signs of cracks. India, holding steady under the RBI's on-hold stance, is still watching the current-account burden from oil-price volatility, while major European economies including the UK, Germany and France went into wait-and-see mode for the Jackson Hole outcome, each carrying its own monetary and fiscal risks.

Tech & Energy

On 24 August, semiconductor and AI-related stocks around the world were hit by simultaneous corrections. The US Philadelphia Semiconductor Index (SOX) plunged 3.54%, entering a technical bear market, and Micron fell 7.1% even though its 2026 HBM volumes and prices are already locked in by contract. Taiwan's TAIEX and TSMC, and South Korea's KOSPI, Samsung Electronics and SK Hynix, also came under downward pressure. The common explanation is not a deterioration in orders or fundamentals but investors pre-emptively unwinding overheated AI chip positions ahead of Nvidia's 26 August earnings and the Fed's Jackson Hole meeting. With TSMC shares seen as about 15% overvalued relative to fair value, the market is putting to the test whether Nvidia will justify that premium with earnings. Whether this correction is a pause for breath or an inflection point in the AI investment cycle is expected to be gauged by Nvidia's results this week.

The fortunes of South Korea's two chip giants diverged sharply. Samsung Electronics' shareholder return plan of ₩90-110 trillion a year, announced on Friday 21 August, fell well short of the up to ₩200 trillion the market had hoped for, triggering disappointment selling that sent the shares down 3-9% depending on the measure used; only ₩30 trillion of immediately confirmed cash dividends was announced, and how the remaining funds will be used will not be decided until next January. SK Hynix, by contrast, raised its buyback-and-cancellation standard from ‘up to 50%’ to ‘at least 50%’, winning market trust and rising alone. Both companies played the same card of large shareholder returns, but the market reacted in opposite ways to the difference in certainty and specificity. It shows that the ‘peak memory’ worries over the two stocks, already down 50% and 34% from their June highs, have not gone away, and suggests that capital-allocation policy, more than DRAM price rises themselves, now drives short-term share prices.

Energy security risk around Iran rose a notch from 24 August. After US Treasury Secretary Bessent announced ‘economic D-Day’ sanctions targeting Iran, Iran's Persian Gulf Strait Authority immediately warned on X that ‘vessels violating strait transit rules face fines, seizure and confiscation’. This turns the first stage of the three-stage retaliation scenario Iran had signalled (pressure on cooperating countries, then damage to their interests, then a full blockade of Gulf oil exports) from words into a concrete threat of action, and if seizures actually occur, all crude exports of Gulf producers passing through the Strait of Hormuz could be disrupted. ADNOC tankers have already been hit multiple times since the war began, and this warning could bring the Gulf energy risk premium back into focus.

Russia's fuel crisis has entered a prolonged phase with no clear improvement. A gasoline and diesel export ban from late July was extended to January 2027, and rationing in a second wave and petrol station stock shortages are continuing in several regions in August. The restart of the Kapotnya refinery has also been pushed back to 2027. Imports of fuel from India, Belarus, Kazakhstan and Morocco are putting out the immediate fire, but with the repair of core refining infrastructure delayed, the impact on the daily lives of 50 million people has not been resolved. It remains a case to watch as evidence that Ukraine's strategy of striking refineries is inflicting cumulative structural damage on Russia's energy infrastructure.

Japan is steadily pushing a dual self-reliance strategy in semiconductors and critical minerals. The government confirmed an additional investment of about ¥150 billion ($9.4 million-$9.44 million) in domestic foundry Rapidus to support its 2027 target of 2-nanometre mass production, a national project to reduce dependence on Taiwan and South Korea, with funding support coming twice in August. At the same time, it keeps heavy rare-earth imports from China at virtually zero and continues export controls covering about 60 companies in defence, aviation and shipbuilding. With Gulf capital including Mubadala also considering AI data-centre investments in Akita and elsewhere, Japan is clearly running three tracks at once: chip manufacturing, critical-mineral control and attracting foreign capital.

In the Netherlands, India, Saudi Arabia, France and elsewhere, existing trends carried on by inertia between 24 and 25 August with no dramatic new events. The US MATCH Act aimed at ASML has made no notable progress since reports on 20 August; India faces the task of extending its OSAT-centred ecosystem upstream ahead of the opening of Semicon India in September; detailed disclosure of the Saudi HUMAIN-Qualcomm AI laptop has been delayed since the teaser; and France's SoftBank nuclear-AI hub plan has stalled in implementation since its June announcement. These ‘quiet stagnation’ stretches can paradoxically be read as a holding pattern, in which big events scheduled over the next few days, such as Nvidia's 26 August earnings and follow-up measures on Iran sanctions, could ripple through the stalled projects of several countries at once.

Active conflicts

Key indicators

US Fed Funds Rate3.50~3.75% ―Maintained after the August hold, with new Fed Chair Kevin Warsh set to give his first public speech since taking office on Friday 28 August at the Jackson Hole symposium on 27-29 August. With July nonfarm payrolls down 23,000, the probability of a September hike remains lower, at about 33%. With Treasury Secretary Bessent's formal announcement on 24 August of Economic Outcast sanctions on Iran and the deepening US-Canada tariff war also in play, what message Warsh's debut speech sends on fiscal soundness and Fed independence remains this week's biggest variable.
S&P 5007,652.86 ▼The 24 August (Mon) close was 7,652.86, down 21.51 points (-0.28%) from the previous session (21 August). Two outlets, a TheStreet affiliate (tvnewscheck) and KFGO, confirmed the same figure. The decline came as weakness in chip stocks such as Nvidia (-2.9%), Treasury Secretary Bessent's announcement of sanctions on Iran, and a deepening tariff war after the collapse of US-Canada trade talks all coincided. Volatility is expected to continue ahead of Nvidia's earnings (26 August) and Jackson Hole (27-29 August).
Nasdaq Composite25,980.19 ▼The index closed at 25,980.19 on 24 August (Mon), down 200.26 points (-0.76%) on the day, confirmed by TVNewsCheck and KFGO. Large chip stocks led the decline amid AI valuation worries, and investors turned cautious ahead of Nvidia's earnings after the close on 26 August, two days away. Iran sanctions and the US-Canada tariff dispute also came to the fore, dampening risk appetite.
US 10-Year Yield~4.71% ▼As of the morning of Monday 24 August it was about 4.71%, slightly lower than the previous day's 4.734-4.737% (ZeroHedge; cross-checked as consistent in direction with a CNBC headline that yields fell on talk that Bessent is considering using the Treasury General Account for buybacks). The 30-year is still moving above 5% (about 5.25%). The exact regular-session close differs by decimals between outlets, so it is shown as approximate, with Chair Warsh's Jackson Hole speech on 27-29 August the key variable for direction.
VIX Volatility Index~15.9 ▲The VIX was confirmed at 15.92 before the 24 August (Mon) open, up 5.2% from the previous 15.13, but no further outlet stating the regular-session close could be found, so the figure is shown as an approximation. Given that the S&P 500 (-0.28%) and Nasdaq (-0.76%) both closed lower, a close of 15.9-16 is likely. The announcement of sanctions on Iran and the escalating US-Canada tariff war stoked short-term anxiety, and the risk of renewed volatility remains ahead of Nvidia's earnings on 26 August and Jackson Hole on 27-29 August. The exact close needs further confirmation.
Crude Oil (WTI / Brent)~$85.3/$91.9 ▼On 24 August (Mon), WTI was about $85.2-85.3 a barrel (cross-checked by FXEmpire and EnergyNow, down about 1-2% on the day), while Brent varied by outlet at $91.05-92.76, so the midpoint of $91.9 is used. Ahead of Secretary Bessent's ‘Economic Outcast’ sanctions announcement on Iran, traders took profits amid uncertainty, correcting after a two-week rally. However, observers note the paradox that if the sanctions actually squeeze Iranian crude exports, upward pressure could return.
Gold~$4,680/oz ―Gold prices on 24 August (Mon) varied so widely by source that a single close could not be determined (spot $4,622-4,636 per VietnamNews; December futures $4,673-4,712 per Yahoo Finance). Entering a new value arbitrarily would create a false move in the time series, so the previous reading ($4,680) is retained, though the actual 24 August close may lie between $4,600 and $4,710. Most outlets agree on the direction: a third straight weekly gain, near record levels. Fiscal deficit worries, a weaker dollar and uncertainty over Iran sanctions are stoking safe-haven demand. Jackson Hole on 27-29 August is the next variable.
Bitcoin~$78,900 ▲On the morning of 24 August in New York, Fortune put Bitcoin at $78,976 (+2.14% on the day), and Yahoo Finance had it rising from an opening price of $77,728 (+0.8%) to $79,107 at 8:50am, so both sources point to a $77,000-79,000 range. The weekend rally continued, with Ether also rising (+1.6%). Expectations for Fed policy ahead of Jackson Hole and for pro-crypto regulation are cited as the backdrop.
KRW/USD₩1,383.2 ▼The 24 August (Mon) reference rate was ₩1,383.2 per dollar, a further fall from the previous day (₩1,386.5) and a stronger won, cross-checked by Daishin Securities and Tour Korea. The trend of an 11-month low continues. Three days before the Bank of Korea board meeting on 27 August, hike and hold minority views are evenly split, and the won strengthened even as the KOSPI plunged 3.12%, a decoupling between the currency and stock markets.
JPY/USD~¥158.9 ―In Tokyo trading on 24 August the dollar was at 158.889 yen (-0.03%), holding steady in the high 158s on dollar selling by exporters (KB Think). However, some outlets such as Hankyung reported that the yen was ‘approaching 160 again’ as the probability of a BOJ hike in September jumped from 61% to 80%, so the tone differs between outlets. The Japanese 10-year yield remains at 2.945%, a 30-year high.
EUR/USD~1.168 ―As of 24 August EUR/USD was $1.16802 (+0.04% on the day), essentially flat (KB Think, Tokyo session). A slight dip in US Treasury yields and French fiscal and political unrest are offsetting each other as upside and downside factors. This week's direction is likely to hinge on Chair Warsh's Jackson Hole speech and data from individual European countries.
KOSPI6,696.96 ▼The KOSPI plunged 215.99 points (-3.12%) from the previous day on Monday 24 August to close at 6,696.96, breaking below 6,700 (BusinessKorea). The direct trigger was disappointment over Samsung Electronics' ₩90-110 trillion shareholder-return plan announced on 21 August, which left out share buybacks and set off heavy selling. Foreigners net sold ₩389.7 billion and institutions ₩166.5 billion, with only individuals net buying ₩384.0 billion to cushion the fall. The KOSDAQ, by contrast, rose 1.42% to 813.33 on strength in battery stocks and net buying by both foreigners and institutions, a clear large-cap/small-cap decoupling. Note: Samsung Electronics' decline differs widely by outlet, from -3.55% (Seoul Economic Daily, close ₩271,500) to -8.79% (Korea Times), and needs cross-checking.

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