Pakistan, Qatar, Turkey and Egypt, have been working to help bridge differences between the U.S. and Iran and encourage efforts aimed at reopening of the Strait of Hormuz.

The U.S. President also claimed Monday morning that "final negotiations on ‘peace’ are proceeding, subject to ignorance or stupidity getting in its way."

President Trump has voiced his frustration with Prime Minister Benjamin Netanyahu of Israel, but it is not clear how able he is to rein in Israeli military action.

Iran has fired missiles at Israel, marking the first such attack in two months since a ceasefire. The truce in the Iran war hasn't extended to Lebanon, where Israel is battling Iranian-backed Hezbollah militants.