It remained to be seen whether the attack would ignite a regional war or provide the U.S. and Iran with an off-ramp from their intensifying confrontation.

Iran announced Monday night that it had launched an attack on American forces at Al Udeid Air Base in Qatar, calling it a “mighty and successful response" to U.S. aggression.

President Trump said Iran gave early notice of the attack and signaled hope for de-escalation. Follow along for live news, updates and analysis as the Iran-Israel conflict develops.