President Donald Trump said early on Sunday that if Iran attacks the United States in any way, it would face the might of the US military “at levels never seen before.”

Israel and Iran exchanged deadly strikes overnight, killing over 80, while Trump warned Tehran against attacking U.S. assets and called for a peaceful resolution.

Former US President Donald Trump on Sunday stated that the United States had "nothing to do" with the overnight strike on Iran, hours after Israel declared it had launched an "extensive series of strikes" targeting Iranian Defence Ministry headquarters and a nuclear site.

US President Donald Trump issued a stern warning to Tehran on Sunday, as hostilities between Iran and Israel escalated into a third consecutive day of cross-border attacks, clarifying that the US had no involvement in the latest strikes but cautioned that any provocation against American interests would be met with overwhelming force.

The United States is the main international backer of Israel, Iran's biggest regional foe. It is also a close ally of Sunni Gulf monarchies which for years pursued their own rivalry with the Islamic Republic, seeing it as their main regional threat.

The two sides were scheduled to meet for a sixth round of negotiations on Sunday. Oman, which was set to host the talks, said on Saturday that this round had been canceled.

Iran launched dozens of ballistic missiles toward Israel on Friday night in retaliation for Israel's surprise attack early Friday. Israel struck at the heart of the Iran's nuclear program, killing several nuclear scientists as well as high-ranking military leaders, according to Israeli officials.

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.

The United States has pulled some diplomatic staff and military families out of the Middle East, citing unspecified regional security risks.

Iran launched dozens of ballistic missiles toward Israel on Friday night in retaliation for Israel's surprise attack early Friday. Israel struck at the heart of the Iran's nuclear program, killing several nuclear scientists as well as high-ranking military leaders, according to Israeli officials.

Israel's operation against Iran is projected to last "weeks, not days," with implicit US approval, according to White House and Israeli officials.