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.

Experts suggest the U.S. has a strategic opportunity to leverage Iran's weakened position for a nuclear deal after Israel's targeted strikes on Iranian nuclear and military sites.

US President Donald Trump predicted on Sunday (local time) that he would soon broker peace between Israel and Iran, citing unspecified "calls and meetings" as evidence of progress, adding that his intervention had led to peace between several conflict-ridden countries,

The U.S. has unique power to force restraint, but with the offensive on its third day and the death toll rising, there is little sign Trump will wield his leverage.

All night people in Israel have been braced for more rockets. Just before 01:00 the Israeli military announced that it was striking missile sites in Iran, and instructed residents to move closer to shelters. Four hours later the response came – with what felt like the largest barrage so far of this conflict.

A statement released by Secretary of State Marco Rubio expressed no solidarity with Israel. The response may reflect a certain irritation with Netanyahu, who, by ordering the strikes, has undermined negotiations with Tehran that Trump relaunched in March.

US is involved in stopping Iranian missile and drone fire; the UK and France are not known to participate, but have signaled they could

US President Donald Trump predicted on Sunday (local time) that he would soon broker peace between Israel and Iran, citing unspecified "calls and meetings" as evidence of progress, adding that his intervention had led to peace between several conflict-ridden countries,

Iranian Supreme Leader Ali Khamenei has warned that Israel faces a ‘bitter and painful’ fate following the attack.