U.S. allies and adversaries responded to the joint attacks by the U.S. and Israel on Iran with concern over the risks of a new war in the Middle East.

Follow the latest news after the U.S. and Israel launched a massive attack on Iran that reportedly killed Iran's Supreme Leader Ayatollah Ali Khamenei.

The United States and Israel carried out major military strikes in Iran Saturday as U.S. President Donald Trump called on the Iranian people to "take over your government."

Iran's Supreme Leader Ali Khamenei was killed on Saturday, state media confirmed, after the United States and Israel launched the most ambitious

President Trump said that "heavy and pinpoint bombing" of Iran would "continue, uninterrupted throughout the week or, as long as necessary."

In retaliation for the killing of Supreme Leader Ayatollah Ali Khamenei in US-Israeli strikes, Iran launched missile and drone attacks on Israel and US bases across the Gulf region, killing at least eight people in Israel’s Beit Shmesh city.

Overnight, the United States and Israel launched military strikes against Iran.The strikes targeted Iran’s top leaders, Supreme Leader Khamanei and President Masoud Pezeshkian — trying to kill them, according to a person briefed on Israel’s operation who spoke to NPR.

The U.S. Constitution gives Congress the sole power to declare war, but since 1973, every president has used the War Powers Act.

Israel’s joint strike with the United States against Iran echoes past wars, but reflects a new doctrine shaped by October 7 and the conclusion that deterrence and containment have failed.