Vice President JD Vance is expected to lead a potential second round of negotiations with Iranian officials should a meeting happen before the ceasefire expires next week, sources told CNN.

The closure, and new attacks on ships in the region, come as Washington and Tehran trade barbs over the terms of a potential peace deal.

The situation worsened hours after Iran declared the Strait of Hormuz closed again, reversing a brief easing of restrictions earlier in the day.

US President Donald Trump announced a 10-day ceasefire between Israel and Lebanon, which he said would take effect at 5 p.m. ET. on Thursday.

The US-Israel war on Iran, launched on February 28, has roiled global energy and equities markets after Tehran virtually closed the key Strait of Hormuz.

The U.S.-Israeli war with Iran stands as the largest-ever disruption of global oil and gas supplies due to Iran's ​interruption of traffic through the Strait of Hormuz, which typically carries about 2...