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World briefing — September 11, 2026

As of 2026-09-11

What changed since yesterday

World trends

War & Conflict

The biggest developments were Iran's tanker war (10 vessels near Hormuz attacked by Iran on 9 September, deaths and missing after a tanker was hit near Dubai, oil above $100) and the Houthi ground offensive into Saudi Arabia (advancing from Hodeidah and Taiz towards Bab el-Mandeb, with Pakistan invoking the Mecca joint-defence pact). Both were already rated war, but the actual front lines and scale expanded. In Russia-Ukraine, the US envoy's visit failed to produce a ceasefire, and Kyiv was struck again right after the envoy left, restoring the earlier escalation.

Geopolitics & Diplomacy

US-Iran escalation: after US forces sank five Iranian tankers (near the Gulf of Oman and Kharg Island) on 9 September, Iran immediately retaliated with a missile attack on Jordan's Al-Azraq base and attacks on 10 ships near the Strait of Hormuz. Oil prices are approaching $100 a barrel, and tensions are spreading across the Gulf (UAE, Saudi Arabia, Jordan).

Yemen's Houthis launched a large-scale attack on Aramco facilities and an air base in southern Saudi Arabia on 8 September (73 injured), effectively collapsing the four-year truce. On 9 September Pakistan for the first time officially mentioned the possibility of invoking the Mecca joint defence pact it signed with Saudi Arabia and Turkey, putting the regional multilateral military alliance to a real-world test.

In Russia-Ukraine, as soon as the three-day interim truce (5-8 September) timed to the US envoys' visit ended, Russia resumed large-scale strikes across the country, including Kyiv (5 killed), and Ukraine hit back with drones as far as Saratov, 1,000 km from Moscow, confirming the stalemate in negotiations.

Israel retaliated on several fronts (9 September), including an order to close the British consulate in Jerusalem, after the UK's ban on imports of West Bank settlement goods took effect (8 September), and on the same day an Israeli court rejected an injunction to halt the tender for the E1 settlement (1,234 homes), raising fears that the partition of the West Bank and the two-state solution will be foreclosed.

In the Balkans, a joint EU leaders' rebuke (8 September) of Serbia's military-honours funeral for Mladic (7 September) further worsened the EU prospects of Serbia and Republika Srpska (Bosnia), while in Norway, Haakon VIII formally acceded to the throne after the state funeral of Harald V on 9 September.

India will host the 18th BRICS summit in New Delhi on 12-13 September, with a Modi-Putin bilateral meeting scheduled on the eve (11 September), while Pakistan is raising tensions in South Asia by simultaneously voicing disputes over Kashmir and the Indus Waters Treaty and warning that it may invoke the Mecca pact.

Casualty counts for the Nepal-Tibet border flood were reorganised by country: Nepal 1,114 dead and 3,916 missing, and China (Tibet) 16 dead and 546 missing (about 75 Americans unaccounted for). Separately, UN findings on the massacre in El Fasher, Darfur, Sudan were released, with a humanitarian crisis of 11.8 million displaced people continuing.

In the Sahel, after the suppression of the attempted coup in Niger (28-29 August), Algeria carried out its first overseas military intervention in more than 60 years by sending fighter jets (30 August), and efforts to manage African conflicts continue, with the DRC and M23 pursuing talks in Geneva on the remaining protocols of the Doha roadmap.

Finance & Economy

The Iran-US tanker war has escalated to its largest scale since the war began. Iran attacked 10 ships near the Strait of Hormuz, after the US had earlier sunk five Iranian tankers. Brent jumped 3% to $101.21 (the highest since May) and WTI to $96.05, also up by more than 3%.

Oil-driven inflation fears hit bonds and equities at the same time. Faster August PPI combined with the oil surge pushed the US 10-year yield up to 4.9%, the highest since November 2023, and the S&P 500 and Nasdaq closed lower for a fourth straight session.

The ECB raised its policy rate by 25bp at its regular 10 September meeting (deposit rate 2.50%), its second straight hike. It cited concern that Middle East-driven inflation is becoming entrenched and hinted at a further hike in October, and the German Bund yield jumped to its highest since 2011.

Asian equities held up despite the oil and rate shocks. The KOSPI defended the 7,000 level (7,033.92) despite foreign net selling of ₩2.5 trillion, while the Nikkei fell 900 points intraday before rebounding to close at 65,270.95. With a BOJ hike to 1.25% on 17-18 September all but a foregone conclusion, the yen traded in a volatile range.

The US-Canada trade war has escalated beyond tariffs into import bans. Right after Canada's retaliatory tariffs on $20 billion of US goods took effect, Trump announced a ban on imports of Canadian dairy, motorcycles and alcohol (effective 29 September).

Emerging markets were mixed. China's August exports jumped 25% and its trade surplus widened (ahead of a Xi-Trump summit); in Australia, GDP and inflation surprises pushed the probability of an RBA hike in September up to 80%; and Argentina's country risk fell further to below 500 points.

Mexico failed to resolve differences over automotive rules of origin and steel tariffs in the fourth round of USMCA renegotiations, and Brazil's President Lula still demanded that the US withdraw its 40% tariffs, so trade friction with the US continued across the Americas.

Tech & Energy

The Hormuz tanker war has escalated to its largest scale since the war began. After US forces destroyed five Iranian tankers on 9 September, Iran simultaneously attacked 10 merchant ships in the Gulf and the Gulf of Oman and a US base in Jordan, and Brent crude jumped to $97 a barrel, a seven-week high. Goldman Sachs raised its December Brent forecast to $85 and warned that $120 in 2027 is possible if Gulf output stays 4 million barrels a day below pre-war levels.

The buyback rally of South Korea's two chip giants is running out faster than expected. Buybacks totalling ₩55 trillion, ₩15 trillion by Samsung Electronics and ₩40 trillion by SK Hynix, were 37% and 32% complete respectively as of 3 September, making it likely that volumes meant to run until November will be exhausted in early October, which raises concern about a gap in KOSPI demand afterwards.

Phase two of US semiconductor tariffs was made official by Commerce Secretary Lutnick's remarks at the G20 on 2 September. The direction is to scrap the data-centre and start-up exemptions and extend tariffs to downstream products such as servers, laptops and game consoles, but the specific rates and grace period are still undecided, leaving the industry ‘frozen’.

A global rush of AI data-centre investment is spreading to Europe, the Middle East and Africa. France has attracted investment from SoftBank (€75 billion) and Brookfield (€30 billion, increased from before), and Germany's Schwarz Group has confirmed a €5.6 billion data centre. Egypt has formalised a $1 billion AI data centre with a consortium of Vodafone, Elsewedy and Kasava (an Nvidia partner), while in Italy the grid-connection queue has passed 95GW, making power supply a bottleneck.

Geopolitical conflict over the semiconductor supply chain continues. The $318 million asset freeze imposed by a Chinese court over Nexperia will remain in place until 2029, and the UAE's state-backed AI company G42 is considering even handing control to a US company to keep its access to Nvidia chips. Russia and China signed a cooperation agreement on building Power of Siberia 2 but failed to resolve their differences over the gas price.

At its first event under new CEO John Ternus, Apple unveiled its first foldable phone, the ‘iPhone Duo’ (from $1,999), marking the biggest form-factor change since the iPhone X. Pre-orders open on 16 October, with release set for 23 October.

TSMC is on course, including raising 2-nanometre output to 100,000 wafers a month by year-end, while Taiwan's plan to criminalise exports of AI chips to China has made little progress since it was announced as under review in June. India's Yotta Data Services has postponed its IPO again to the first quarter of 2027 and raised its target to $1.5 billion.

Active conflicts

Key indicators

US Fed Funds Rate3.50-3.75% (midpoint 3.625, on hold) ―The 15-16 September FOMC is scheduled. On accelerating August PPI and oil-led inflation worries, the market probability of a 25bp hike has risen to about 60% (a contrary estimate also exists, putting the probability of no change this year at around 93%).
S&P 5007,591.70 (-44.66pt, -0.58%) ▼Fell for a fourth straight session as oil broke through $100 and long-term yields spiked on the PPI.
Nasdaq Composite26,081.72 (-0.65%) ▼Fell for a fourth straight session, along with the S&P 500.
US 10-Year Yield~4.90% (highest since November 2023) ▲Surged on inflation worries from a surprise in August PPI and the oil spike. Some TradingEconomics snapshots conflict, showing 4.84% (slightly down on the day), but many reports (CNBC, Ranson Financial and others) say it broke above 4.9% at the close.
VIX Volatility Index16.44 ―The 10 September (Thu) close is unconfirmed because of large discrepancies between outlets (16.46 vs 18.01, intraday high 18.17), so the previous value is kept. It broke above 17 for the first time in 28 trading days. Close figures differ by outlet, such as +4.7% (16.46) vs +9.44% (18.01), so the final value is unknown.
Crude Oil (WTI / Brent)WTI $96.05 (+3.3%) / Brent $101.21 (+3.4%, highest since 22 May) ▲Iran attacked 10 ships near the Strait of Hormuz (the largest such attack since the war began), and the US sank five Iranian tankers on 8 September. Prices surged on fears of escalation.
Gold~$4,383/oz (-0.3%) ▼Gold turned slightly lower, pulling back after the August PPI release (retreating from around $4,400 intraday the previous day). Gold ETFs are still seeing inflows.
Bitcoin~$78,000 ―Continued to move sideways below $80,000 as investors watched the US buyback issue and developments in the Middle East.
KRW/USD₩1,339.2 (+₩3.1) ▲Based on the 3:30pm close. A slight rebound from the previous day's 23-month low (₩1,336.1) as the won turned weaker.
JPY/USD~¥153.85 (NY close; intraday high ¥154.67) ▲The yen weakened as accelerating US PPI lifted long-term yields and the dollar. Expectations of a BOJ hike on 17-18 September (a 25bp rise to 1.25% is likely) clashed with dollar strength, widening volatility. It differs slightly from the TradingEconomics snapshot (153.38). (Source discrepancy: 153.85 NY close vs TradingEconomics 153.38).
EUR/USD~1.163 ―At its regular meeting on 10 September the ECB raised its benchmark rate by 25bp (deposit rate 2.50%, refinancing rate 2.65%, marginal lending rate 2.90%, effective 16 September), a second consecutive hike to counter inflation pressure from the Middle East. President Lagarde called the decision a "no-brainer" and signalled the possibility of a further hike in October.
KOSPI7,033.92 (-17.72p, -0.25%) ▼Despite foreign net selling of ₩2.5 trillion, which pushed the index as low as 6,898 at one point intraday, buying by individuals and institutions defended 7,000 at the close.

Key relations

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