No U.S. casualties are reported in strike

American officials said today that there were no immediate indications of deaths or injuries to U.S. personnel after Iran hit two military bases in Iraq. Senior Iraqi officials later said that there were also no Iraqi casualties. The attacks involved more than 20 ballistic missiles.

Tehran called the strikes “fierce revenge” for last week’s killing of Maj. Gen. Qassim Suleimani, a top commander. The Iranian foreign minister later said the attacks were “concluded” and that his country didn’t seek “escalation or war.”

President Trump struck an upbeat tone, writing on Twitter, “All is well!” He said he would make a statement this morning.

The details: Iran attacked an air base in western Iraq that Mr. Trump visited in 2018 and another base near Erbil, in the north. Here’s what we know about them.