Peace talks clouded by uncertainty after US seizes Iranian ship

Concerns grew on Monday that the ceasefire between the United States and Iran might collapse after the U.S. said it had seized an Iranian cargo ship that tried to run its blockade and Iran vowed to retaliate. Efforts to build a more lasting peace in the region also appeared under threat, as Iran said it would not participate in a second round of negotiations that the ​US had hoped to ‌kick off before the ceasefire expires.