Despite differences between diplomats and military officials, Iranian authorities have largely presented a united front toward the United States: They have refused to negotiate under pressure and have demanded prior guarantees, especially regarding the lifting of the blockade in the Strait of Hormuz.

Tehran is undecided about joining U.S. talks in Pakistan, citing preconditions and a negative negotiation atmosphere, reports state media.

Donald Trump announced the dispatch of a US delegation to Islamabad for new talks with Tehran, which refuses to confirm its participation.