Initial deal to end US-Iran war moves toward formal signing

An initial agreement between the United States and Iran to extend their shaky ceasefire is inching toward a formal signing. That's despite questions Monday over the fate of Tehran’s nuclear program and an offensive by Israel in Lebanon that could prolong the fighting and scuttle the deal. The agreement signed electronically Sunday is meant to provide a meaningful truce in a monthslong war that has killed thousands across the Middle East, including the top leaders of Iran’s theocracy, and raised the prices of fuel, food and other basic goods far beyond the region. But logistical and military challenges underscored the fragile nature of the deal.