AI boom OpenAI says that it has solved the Navier–Stokes Millennium Prize problem, with the announcement raising questions about plagiarism.
2026 Musée Renoir theft Thieves steal "Jeune Femme au puits and "Madame Colonna Romano by Pierre-Auguste Renoir from the Musée Renoir Renoir in Cagnes-sur-Mer, Alpes-Maritimes, France. The works have an estimated value of €9 million.
German support for Israel in the Gaza war Nicaragua urges the International Court of Justice to reject Germany's objections to its case, stating that German arms exports to Israel breach the Genocide Convention and international humanitarian law. Germany responds by saying that the court lacks jurisdiction over parts of the case.
Bosnia and Herzegovina–Serbia relations Bosnia and Herzegovina declares two Serbian embassy diplomats, military attaché Milan Dulanović and Security Intelligence Agency representative advisor at the embassy Darko Maksimović, as "personae non gratae" after attending the funeral of convicted war criminal Ratko Mladić in Belgrade.
Israel–United Kingdom relations To reciprocate the UK sanctions, Israel announces it will close the UK consulate in East Jerusalem. Israel also forbids the UK from participating in the U.S.-led mission for Gaza, and bans some British officials, including former Labour leader Jeremy Corbyn, from entering the country.
The United Kingdom announces it will ban imports of all goods from Israeli settlements in the West Bank, as well as some services, including financing, construction, infrastructure, real estate, and advertising.
Morocco–Spain relations Spain declassifies around 40 intelligence reports concerning the July migrant crisis into Ceuta, during which more than 70,000 people crossed from Morocco, amid scrutiny of whether Moroccan security forces facilitated the crossings and whether Spanish security services had prior warning of the influx.
Indonesia Indonesia's food agency suspends nearly 2,000 kitchens in its national free meals programme after they fail to register for mandatory sanitation inspections, as the agency strengthens food safety measures following widespread food poisoning cases.
Health effects arising from the September 11 attacks Mayor Zohran Mamdani says that New York City, U.S., has released over 170,000 documents detailing that city officials knew about the air quality and unsafe conditions at the time of the September 11 attacks including at Ground Zero.
Famine in Sudan A famine is reported across Sudan's Jebel Marra area in the Darfur region, with 20 people dying from hunger and diseases.
2026 North American heat wave A third-year student in the marching band at the University of Iowa in Iowa City, U.S., dies after collapsing during extreme heat at the Iowa Hawkeyes season opener at Kinnick Stadium. Temperatures reached 94 F at the time of the game.
Indonesia Indonesia reopens its airport in Jakarta and four others after previously being closed due to ashes from Anak Krakatoa.
MBB Bo 105 A MBB Bo 105 helicopter operating for the Flying Doctors of Malaysia crashes near Long Lellang, Sarawak, Malaysia, killing all five onboard.
2026 Nepal–Tibet floods The National Disaster Risk Reduction and Management Authority reports that 13,583 people have been rescued so far since flash floods ravaged Nepal.
International sanctions against Iran The U.S. treasury department imposes sanctions against 27 Iranian airlines, including flag carrier Iran Air, in an effort to squeeze Iran's economy.
Canada–United States relations In response, the United States announces a ban on the imports of Canadian alcoholic drinks, motorcycles, and dairy products beginning September 29.
Canada's retaliatory tariffs of 15% to 50% on CA$27.6 billion (US$19.9 billion) of U.S. goods, including steel, dairy products, appliances, agricultural equipment, paper products, and electronics, take effect in response to U.S. tariffs on Canadian imports.
Sudanese civil war Peace talks are held by mediators from the African Union, the Intergovernmental Authority on Development, the Arab League, the European Union and the United Nations, in Khartoum, Sudan, in an effort to end the three-year long civil war, with UN envoy Pekka Haavisto attending the talks.
Around 13 people are killed in a drone strike by the Rapid Support Forces on a courthouse in Umm Ruwaba, North Kordofan.
Russo-Ukrainian war Russia launches drones and missiles at Kyiv, Ukraine, following a weekend pause in strikes, killing five people and injuring at least 10. The attacks damage civilian infrastructure at at least 16 locations and cause fires in five districts.
Yemeni civil war The toll from yesterday's Saudi airstrike against a prison in Al-Jawf Governorate increases to 17 people killed and seven more wounded.
The confirmed toll of the offensive in western Yemen increases to 500 people killed, including 278 Houthi fighters, 216 soldiers of the Yemeni Armed Forces and 29 civilians.
Houthi forces launch ballistic missiles and drones at several locations in Saudi Arabia, injuring 73 people, including civilians, and causing fires that temporarily halt operations at some energy facilities.