DUBAI, May 23 (Reuters) - Iran's top negotiator, Parliament Speaker Mohammad Baqer Qalibaf, told Pakistani army chief Asim Munir during talks in Tehran on Saturday that the U.S. was not an honest party in negotiations to end their war and Iran would not compromise on its national rights, state television reported.A regional mediation push led by Pakistan aims to narrow differences between Iran and the U.S. after weeks of war that have left the vital waterway of the Strait of Hormuz closed to most shipping despite a nervous ceasefire, upending global energy markets.

Pakistan military chief Asim Munir to travel to Tehran for talks, according to Iranian media reports.

Pakistan stepped up diplomatic efforts Thursday to bring Iran and the U.S. back to the negotiating table as Tehran examined a new proposal to end...