DUBAI/WASHINGTON - Iran is considering attending peace talks with the United States in Pakistan, a senior Iranian official said on Monday, following moves by Islamabad to end a U.S. blockade of Iran's ports, a significant obstacle to Tehran rejoining peace efforts.However, the official stressed that no decision had been made and Iranian Foreign Minister Abbas Araqchi said that 'continued violations of the ceasefire' by the U.S. are a major obstacle to continuing the diplomatic process.Araqchi told his Pakistani counterpart Ishaq Dar in a telephone call that Iran, while taking all aspects of the matter into ​account, had yet to decide how to proceed further. The two-week ceasefire in a conflict that has killed thousands and roiled the global economy, particularly energy markets, is set to expire this week. ‌