The U.S. and Iran traded messages over the weekend seeking changes to a draft agreement that would extend a ceasefire and open the Strait of Hormuz, but it was unclear if the sides were making much progress.

As the diplomatic exchanges continued, Israel expanded its ground assault in Lebanon, shattering a brittle truce with its northern neighbor.

President Donald Trump hasn¡¯t spoken on the subject of Iran since a White House Situation Room meeting Friday in which he said he expected to announce an agreement. In a social media post earlier that day he reiterated his demands, including that Iran suspend its nuclear program and fully restore the strait to its earlier status as a free, international waterway.