The rejected cease-fire agreement and the continued exchanging of fire between Israel and the Hezbollah militant group in Lebanon casts a shadow over the progress of U.S.-Iran peace negotiations.

A partial cease-fire brokered by Donald Trump failed to stop fighting between Israel and Hezbollah in southern Lebanon and across the Israeli border.

Hezbollah's chief on Thursday rejected a conditional truce announced by Lebanese and Israeli envoys, demanding instead a comprehensive ceasefire and full Israeli withdrawal as he…