Today in one sentence: The U.S. and Israel launched “massive and ongoing” “major combat operations” in Iran; Iranian state media said Supreme Leader Ali Khamenei was killed in the joint U.S.-Israeli strikes; Democrats said they’ll try to force votes on War Powers resolutions to limit Trump’s authority to continue U.S. military action against Iran; Trump ordered federal agencies to “immediately cease” using Anthropic’s Claude AI model after the company insisted on enforceable limits against fully autonomous weapons and mass domestic surveillance; and OpenAI reached an agreement with the Pentagon to deploy its AI models on classified Defense Department networks.

1/ The U.S. and Israel launched “massive and ongoing” “major combat operations” in Iran. Trump and Israeli Prime Minister Benjamin Netanyahu said the operation was necessary to end an “existential threat” and to prevent an Iranian nuclear weapon. Trump said the U.S. would “destroy their missiles,” “raze their missile industry,” and “annihilate their navy,” and officials said the campaign could last several days. Trump added: “Our objective is to defend the American people by eliminating imminent threats from the Iranian regime,” saying Iran had “attempted to rebuild” its nuclear program despite last June’s “Operation Midnight Hammer,” which he claimed had “obliterated the regime’s nuclear program.” Nevertheless, Trump said Iran was developing “long range missiles” that could threaten U.S. allies in Europe and “could soon reach the American homeland.” Trump warned that “the lives of courageous American heroes may be lost and we may have casualties,” adding “That often happens in war,” but “we’re doing this not for now […] for the future.” He called it “a noble mission.” Trump, who has claimed to have ended eight wars, said “No president was willing to do what I am willing to do tonight,” urging Iranians to “take over your government” because “America is backing you with overwhelming strength and devastating force.” Iran, saying it would respond “by all means necessary,” retaliated with missile and drone attacks at Israel and at U.S. bases and allies across the Gulf, prompting shelter-in-place alerts at U.S. embassies and air defense interceptions in multiple countries. (New York Times / Washington Post / Politico / Bloomberg / ABC News / Associated Press / Wall Street Journal / Axios / CNBC)

2/ Iranian state media said Supreme Leader Ali Khamenei was killed in the joint U.S.-Israeli strikes, after hours of mixed signals that included an Iranian foreign ministry spokesman saying he was “safe and sound.” Trump celebrated the killing as “justice,” saying Khamenei “was unable to avoid our Intelligence and Highly Sophisticated Tracking Systems.” He warned that bombing would continue “throughout the week or as long as necessary.” Israel said the strikes also killed senior defense and intelligence figures. Under Iran’s constitution, an interim council assumes authority while the 88-member Assembly of Experts selects a new supreme leader. There is no clear successor. (Axios / Politico / New York Times / Washington Post)

3/ Democrats said they’ll try to force votes on War Powers resolutions to limit Trump’s authority to continue U.S. military action against Iran. Rep. Thomas Massie and Sen. Rand Paul, called the strikes “acts of war unauthorized by Congress.” Passage, however, looks uncertain in the Republican-controlled House and Senate. Senate Minority Leader Chuck Schumer and Sen. Tim Kaine said the administration hadn’t provided Congress or the public “critical details” on the scope or immediacy of any threat, and they demanded an all-member classified briefing and public testimony, arguing Trump struck without authorization. Republican leaders, including Senate Majority Leader John Thune and Speaker Mike Johnson, defended the operation as justified and that lawmakers would be briefed. (ABC News / Bloomberg / Politico)

4/ Trump ordered federal agencies to “immediately cease” using Anthropic’s Claude AI model after the company insisted on enforceable limits against fully autonomous weapons and mass domestic surveillance. Defense Secretary Pete Hegseth then labeled the company a “supply-chain risk,” seeking unrestricted use of its technology for any “lawful purpose.” Hegseth said contractors and suppliers that work with the military “may not conduct any commercial activity” with Anthropic. The administration, however, allowed up to six months for some agencies to transition “to a better and more patriotic service.” Anthropic called the designation “legally unsound” and said any ban can’t legally extend beyond Claude’s use on Defense Department contract work. (Washington Post / Politico / New York Times / Associated Press / CNBC / The Verge / Axios)

5/ OpenAI reached an agreement with the Pentagon to deploy its AI models on classified Defense Department networks. CEO Sam Altman said the deal allows “any lawful use,” but bans domestic mass surveillance and requires “human responsibility” for any use of force, including around autonomous weapons. Altman said OpenAI will add technical safeguards so the models “behave as they should,” though neither OpenAI nor the Pentagon publicly described what those controls are, how they will be audited, or what happens if they fail. (NBC News / Wall Street Journal / New York Times / Axios)