Shapiro served as Deputy Assistant Secretary of Defense for the Middle East until January—charged with, among other things, considering scenarios in which tensions between Israel and Iran escalated into all-out war and preparing U.

Iranian officials have repeatedly denied seeking a nuclear weapon. The United States and Iran have held five rounds of negotiations toward achieving an agreement that would limit Iran's nuclear activities in exchange for sanctions relief, with a sixth round of talks scheduled for Sunday.

G7 will also be a platform for Canadian PM Carney to showcase his leadership at a time of economic, geopolitical shifts.

Republicans and some Democrats offered strong support for Israel’s move, but many Democrats called for de-escalation and warned of the consequences of a broader war.

Tehran said American bases in the Middle East could face reprisals if the U.S. helped repel Iranian attacks on Israel.

Israel warns "Tehran will burn" if Iran continues firing missiles, while state media say 60 people have been killed in a strike on Iran's capital.

National security experts warn that Israel's attack on Iran shows why Chinese land and asset purchases in the U.S. pose a significant threat to American security.