The US and Gulf states launched a renewed diplomatic effort to ward off a resumption of conflict with Iran, though officials cautioned that the push remained fraught with challenges.

The US vice president reportedly wrote to the head of Iran’s top security body to restart truce talks, Gulf states are driving a deal to fully reopen the Strait of Hormuz, and Iran’s foreign minister said Tehran would “give diplomacy a chance.”Oil prices fell on the news, though they remain far above pre-war levels, and a Trump administration official warned that Washington would resume fighting if negotiations failed: While several members of the White House are skeptical of further strikes, the president is “the one most open,” the official told Semafor.