The planned second round of peace talks between the United States and Iran has become uncertain after the US Navy seized an Iranian cargo ship named Tuska in the Strait of Hormuz on Monday. Following the seizure, Iran launched a drone attack on a US warship and declared it would not join any peace talks under current conditions. The incident has heightened tensions ahead of the talks expected in Islamabad, where security has been tightened with about 20,000 personnel deployed.

According to US Central Command, the ship was seized after ignoring repeated warnings over six hours. Iran condemned the action as piracy and threatened retaliation. Pakistani Army Chief Asim Munir told US President Donald Trump that the American blockade of Iranian ports was the main obstacle to peace. Trump, meanwhile, warned that if Iran refused to sign a deal, it would face severe consequences. The uncertainty has driven global oil prices up by more than seven percent.

Both Washington and Tehran have sent mixed signals about participation, though US Vice President JD Vance and Iranian official Mohammad Bagher Ghalibaf are expected to attend if conditions permit.