Lawmakers are introducing resolutions aimed at preventing the U.S. from getting involved with Israel's military campaign against Iran.

As of Monday, however, Trump has adopted a notably more ominous tone. Shortly before his abrupt exit from the G7 meeting being held in Canada, he called on residents of Tehran, home to nearly 10 million people, to immediately evacuate, and later met with top national security officials at the White House Situation Room.

Iran’s allies, the self-described “Axis of Resistance,” have been severely hurt by ongoing Israeli attacks since the Oct. 7, 2023, Hamas attack on Israel, particularly Lebanon’s Hezbollah and Hamas in the Gaza Strip. Iran has long used those groups as both an asymmetrical way to attack Israel and as a shield against a direct assault.

Israel and Iran's long-simmering tensions erupted into missile attacks last Friday, when Israel launched a suprise attack against military and nuclear targets in Iran and wiped out the top echelon of Iran's military command.

Israel stunned Iran last week with an intelligence and military operation years in the making that struck high-level targets with precision.

Blasts rang out across a swath of the Middle Eastern republic’s territory, targeting Iran’s nuclear capabilities, military leadership and scientists.

The U.S. is considering targeting Iran's uranium enrichment facility at Fordo, five sources familiar with the matter told CBS News.

Israel has launched a series of strikes against Iran, targeting the country’s nuclear program and other military infrastructure. Iran has launched its own strikes in retaliation.

The Iranian military's new head of emergency command was killed in an Israeli Air Force strike only four days after his predecessor was killed in the initial hours of Israel's strikes targeting Iran's nuclear program.

Israel appeared to be expanding its air campaign against Tehran five days after its surprise attack on Iran’s military and nuclear program, as U.S. President Donald Trump posted an ominous message warning residents of the capital to evacuate.

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