(Changes story date to July 24) By Asif Shahzad and Mubasher Bukhari ISLAMABAD, July 24 (Reuters) – Pakistan is exploring a path towards a resumption of stalled U.S.-Iran talks over ending their nearly five-month-old war, three Pakistani sources said, following a push initiated by China. Exploratory discussions took place during a visit by Iran’s Interior Minister Eskandar Momeni to Islamabad this week — his second within the last 10 days, the sources said. Momeni, who is considered close to Iran’s Revolutionary Guard Corps, met with Pakistani government leaders and army chief Asim Munir this week, according to Pakistani government statements. All three sources cautioned that the obstacles to any talks with the U.S. remain high. STRAIT OF HORMUZ CLOSURE HITTING CHINA Pakistan has found itself in an increasingly complicated situation as a potential future mediator. Earlier this week, Yemen’s Iran-backed Houthi movement declared a naval blockade against Saudi Arabia, a close ally of Islamabad that signed a mutual defence treaty with Pakistan last year. Pakistan relies on Saudi financial support, and Islamabad has firmly condemned …