Investigation of UFO reports by the United States government The United States Department of Defense begins releasing classified files, images and videos relating to unidentified flying objects.
2026 Danish parliamentary election The bid of Prime Minister Mette Frederiksen to form the new Government fails. King Frederik X of Denmark asks the leader of the Venstre party, Troels Lund Poulsen, to try it instead.
2026 Costa Rican general election Laura Fernández Delgado is sworn in as president of Costa Rica, succeeding Rodrigo Chaves Robles.
2026 Bulgarian parliamentary election Rumen Radev is sworn in as prime minister of Bulgaria after being elected in a vote of 124–70, with 36 abstentions at the National Assembly.
Local elections Reform UK take full control of Havering London Borough Council, making it the first Reform-run council in Greater London.
Welsh Labour leader and First Minister of Wales Eluned Morgan resigns after losing her seat in the Senedd as Plaid Cymru claims victory in Wales.
The Labour Party concedes defeat in Wales with Plaid Cymru and Reform UK making significant gains, while the nationalist Scottish National Party claims victory in Scotland.
Hungary–Russia relations Hungary expels a Russian diplomat at the Russian embassy in Budapest identified as a SVR officer who allegedly spent years cultivating contacts in think tanks tied to the government of prime minister Viktor Orbán.
Poland and the European Union Poland becomes the first country to sign a loan agreement under the European Commission's Security Action for Europe defence financing programme, securing nearly €44 billion (US$52 billion) to support military modernization and the domestic arms industry.
Centers for Disease Control and Prevention The U.S. Centers for Disease Control and Prevention reports that 115 people on the cruise ship "Caribbean Princess" have been infected by a norovirus outbreak.
MV ''Hondius'' hantavirus outbreak The World Health Organization reports six cases of the Andes strain of hantavirus in connection with MV "Hondius".
Frontier Airlines Flight 4345 An Airbus A321neo operated by Frontier Airlines strikes and kills a person while taking off from Denver International Airport in Colorado, U.S., leading to an engine fire and aborted takeoff that injures 12 passengers.
May 2026 eruption of Dukono Three hikers are killed, two are missing and 15 more rescued after the eruption of Mount Dukono on Halmahera, Indonesia.
2026 Liuyang fireworks factory explosion The death toll from an explosion at a fireworks factory three days ago in Liuyang, Hunan, China, rises to 37, with 51 injured and one remaining missing.
Mass media in Niger Niger's junta suspends at least 10 French media organizations, including Agence France-Presse and France 24, citing concerns over public order.
61st Venice Biennale Pavilions at the 61st Venice Biennale close after artists go on a strike in protest of Israel's entry into the event organized by the Art Not Genocide Alliance over Israel's role in the Gaza war.
Sudanese civil war The Sudan Civil Aviation Authority issues a NOTAM that Khartoum International Airport has reopened to international traffic after previously being suspended due to the May 4 drone attack.
2026 Iran war Khatam al-Anbiya Central Headquarters spokesperson Ebrahim Zolfaghari accuses the U.S. of violating the ceasefire after it targeted two ships at the Strait of Hormuz and strikes in the Hormozgan province, including Bandar Khamir, Sirik, and Qeshm Island yesterday. He also confirmed that Iran responded by attacking U.S. military vessels east of the waterway and south of Chabahar port.
The U.S. Central Command says that a U.S. Navy F-A-18 Super Hornet from USS "George H. W. Bush" has attacked two Iranian tankers, the M-T "Sea Star III" and M-T "Sevda", as both ships were transiting the Gulf of Oman.
A Malta-flagged tanker carrying 1 million barrels of crude oil arrived off South Korea’s west coast Friday after passing through the Strait of Hormuz in mid-April.
Japanese shipping company Mitsui O.S.K. Lines says that three of their vessels that crossed the Strait of Hormuz last month did not pay transit fees.
Three people are injured after the United Arab Emirates defence ministry says that they have intercepted two ballistic missiles and three drones from Iran. Increasing the total number of injuries in the country since the war began to 230.
Iranian foreign minister Abbas Araghchi and Turkish foreign minister Hakan Fidan hold a phone call to review the status of talks between Iran and the United States.
"The Wall Street Journal" reports that Iran and the United States may resume talks next week in Islamabad, Pakistan.