Barzani threatened to secede (RFE/RL file photo)
The issue came to a head when Iraqi Oil Minister Husayn al-Shahristani told the state-owned daily "Al-Sabah" on September 24 that contracts signed with foreign firms to develop oil fields in the north without the approval of the central government were subject to review by the ministry. Officials in the Oil Ministry also said that foreign firms currently working in the Kurdish region would be blacklisted in the future from attaining contracts to develop oil fields in southern Iraq.