CONFLICT ENTERS FOURTH DAY: Israel and Iran have begun a new round of attacks, as the conflict between the two heavily armed rivals enters its fourth day.

President Donald Trump is attending the opening day of the Group of Seven summit in Canada on Monday, where some of the staunchest and oldest U.S. allies are expected to discuss tariffs and the escalating military conflict between Israel and Iran — all while attempting to avoid direct confrontations with the mercurial U.

Israel and Iran both have little incentive to stop and no obvious route to outright victory. Much depends on President Trump.

Iran launched a new wave of missile attacks on Israel early Monday, setting off air raid sirens nationwide as emergency services reported at least five dead and dozens wounded. Follow along for live updates.

"The full strength and might of the U.S. Armed Forces will come down on you at levels never seen before," Trump warned.

The "America First" president praised his foreign policy record on Sunday while urging a deal between Iran and Israel amid escalating strikes.

Israel’s attack on Iran was long in the making – the result of years of meticulous planning by Israel and days of high-stakes talks between Tel Aviv and Washington, officials told CNN.

President Trump is trapped between the “America First” isolationists and others in his party who are cheering on Israel’s strikes against Iran.