MSNBC's Jonathan Lemire and Joe Scarborough speculate about President Trump's position on the rapidly escalating Israel-Iran war: JONATHAN LEMIRE, MSNBC: He’s casting about for the right approach, as I mentioned a few minutes ago.

Rep. Marjorie Taylor Greene (R-Ga.) blasted fellow conservatives for failing to follow President Donald Trump’s “America First” agenda — and had some Democrats even agreeing with her perspective.

The U.S. president faces pushback over the risk of U.S. involvement in the escalating conflict between Israel and Iran.

It’s a tableau no world leader — except perhaps President Donald Trump — wants to repeat. Convening in the Canadian Rockies for this week’s Group of 7 summit, presidents and prime ministers are hoping to avoid the acrimony that pervaded the last time this country played host to the world’s most exclusive club.

The Israeli military claims its campaign has eliminated high-value targets, including nine senior scientists, and severely damaged Iran’s nuclear infrastructure. Iranian authorities confirmed damage to four critical buildings at the Isfahan uranium conversion facility,

The president had opposed Israeli action against Iran but came to believe that Israel had reason to act and that the U.S. would have to lend some support.

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

Israeli Prime Minister Benjamin Netanyahu is on the mission of his lifetime. For years, the veteran leader has made the destruction of Iran’s nuclear program his top priority.