Sabir Hassan, one of Khartoum's negotiators, talks to Reuters in an interview in Khartoum March 25, 2012. South Sudan's shutdown of its crude production in a damaging row with Sudan over oil payments appears to have backfired and put pressure on Juba to soften its bargaining stance, Hassan said on Sunday. To match Interview SUDAN-TALKS/
REUTERS/Mohamed Nureldin Abdallah (SUDAN - Tags: POLITICS ENERGY)