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Iranian foreign minister discusses stalled gas pipeline project during visit to Pakistan

  • Pakistan's National Security Advisor Sartaj Aziz, right, shakes hands with Iranian Foreign Minister Javad Zarif at the Foreign Ministry in Islamabad Thursday, Aug. 13, 2015. Zarif arrived in Islamabad to meet with Pakistani leaders. (Aamir Qureshi/Pool Photo via AP)

    Pakistan's National Security Advisor Sartaj Aziz, right, shakes hands with Iranian Foreign Minister Javad Zarif at the Foreign Ministry in Islamabad Thursday, Aug. 13, 2015. Zarif arrived in Islamabad to meet with Pakistani leaders. (Aamir Qureshi/Pool Photo via AP)  (The Associated Press)

  • Pakistan's Prime Minister's Adviser on Foreign Affairs Sartaj Aziz, right, speaks at a joint news conference as visiting Iranian Foreign Minister, Mohammad Javad Zarif, looks on at the Foreign Ministry in Islamabad, Pakistan, Thursday, Aug. 13, 2015. (AP Photo/B.K. Bangash)

    Pakistan's Prime Minister's Adviser on Foreign Affairs Sartaj Aziz, right, speaks at a joint news conference as visiting Iranian Foreign Minister, Mohammad Javad Zarif, looks on at the Foreign Ministry in Islamabad, Pakistan, Thursday, Aug. 13, 2015. (AP Photo/B.K. Bangash)  (The Associated Press)

  • Pakistan's Prime Minister's Adviser on Foreign Affairs Sartaj Aziz, right, leaves after addressing a news conference with his Iranian counterpart Foreign Minister, Mohammad Javad Zarif, at the Foreign Ministry in Islamabad, Pakistan, Thursday, Aug. 13, 2015. (AP Photo/B.K. Bangash)

    Pakistan's Prime Minister's Adviser on Foreign Affairs Sartaj Aziz, right, leaves after addressing a news conference with his Iranian counterpart Foreign Minister, Mohammad Javad Zarif, at the Foreign Ministry in Islamabad, Pakistan, Thursday, Aug. 13, 2015. (AP Photo/B.K. Bangash)  (The Associated Press)

The Iranian foreign minister says he has discussed the possibility of resuming work on a stalled Iran-Pakistan gas pipeline during a visit to Islamabad.

Mohammad Javad Zarif, who arrived in the Pakistani capital on Thursday, spoke after meeting with Pakistan's Prime Minister Nawaz Sharif and other officials.

The gas pipeline project was designed to help Pakistan meet its energy needs, but Washington for years had opposed it because of concerns over Tehran's nuclear program.

Zarif said he hoped that a landmark nuclear deal reached with world powers last month could pave the way for the resumption of work on the project.

Iran has invested over $2 billion in the project, but Pakistan has yet to finish construction on its half of the pipeline.