Israeli officials have been pushing the United States to join the fray and use its huge bunker-busting bomb to crush Iran’s nuclear capabilities.

Whether the U.S. gets more involved than it already is, some members of Congress from both parties argue, should not be up to the President.

When Israel launched its series of strikes against Iran last week, it also issued a number of dire warnings about the country’s nuclear program, suggesting Iran was fast approaching a point of no return in its quest to obtain nuclear weapons and that the strikes were necessary to preempt that outcome.

More detail: Trump has said for days that Iran should make a nuclear deal with the U.S. But his message became more dire as he warned the Iranian capital's roughly 10 million residents to flee in the dead of night.

In Iraqi airspace, Iranian missiles and drones have crossed paths with Israeli warplanes, forcing Baghdad to step up efforts to avoid being drawn into the region's latest conflict.But with Baghdad both an ally of Iran and a strategic partner of the United States,

Since Israel began its concerted attack on Iran on Friday, calls for regime change in Iran have grown louder – from hawks in the US Congress to Israeli officials and some Iranian activists abroad.

U.S. stock futures are lower after President Donald Trump abruptly left the Group of Seven summit in Canada. Trump had earlier urged everyone to immediately evacuate Tehran and reiterated that Iran should have signed a nuclear deal with the United States.

The deadly conflict between Iran and Israel entered its fifth day on Tuesday, with both sides widening their attacks.