Oman and Qatar were leading efforts to begin ceasefire talks, while mediators said Iran was open to resuming nuclear negotiations if Israel’s attacks stop.

Iran has vowed to retaliate against the U.S., too, while Trump has warned: “If we are attacked in any way, shape, or form by Iran, the full strength and might of the U.S. Armed Forces will come down on you at levels never seen before.” Here’s what to know about U.S. involvement so far.

Tehran has asked Qatar, Saudi Arabia and Oman to press U.S. President Donald Trump to use his influence on Israel to agree to an immediate ceasefire with Iran in return for Iranian flexibility in nuclear negotiations,

U.S. President Donald Trump said on Monday Iran should have signed a deal with the United States on its nuclear program before Israeli strikes began and that he believes they now want to make an agreement.

The objective would be to discuss a diplomatic initiative involving a nuclear deal and an end to the war between Israel and Iran. Why it matters: The meeting hasn't been finalized yet, but it is part of a last-ditch effort by President Trump to swerve away from war and back toward dealmaking.

President Donald Trump warned all Iranians to evacuate Tehran immediately. In a cryptic and foreboding post on Truth Social, the president bemoaned that a deal wasn’t reached with Iran over its nuclear program.