Oil has played a major role in Libya's years-long civil war. Most of the oilfields are in the east, under warlord Khalifa Haftar's control. This means the UN-recognised Government of National Accord in Tripoli has been cut off from a huge source of income. On Friday, Haftar's forces allowed a tanker to transport some of the crude for the first time in six months. But they reimposed a blockade a day later. Libya's National Oil Corporation blamed Haftar's backer, the United Arab Emirates, for the blockade. The U.A.E says although oil production should resume, it wants what it calls 'safeguards' in place to ensure revenues aren't used to fuel the conflict. Could the dispute scuttle attempts to end the war? Presenter: Imran Khan Guests: Guma Al Gamaty - Special Envoy of Libyan Prime Minister Fayez Al Sarraj to Algeria, Mauritania, Morocco and Tunisia. Wolfgang Pusztai - Former Austrian Defence Attaché to Libya. Jonathan Winer - Former U.S. Special Envoy to Libya. - Subscribe to our channel: aje.io/AJSubscribe - Follow us on Twitter: twitter.com/AJEnglish - Find us on Facebook: www.facebook.com/aljazeera - Check our website: www.aljazeera.com/ #AlJazeeraEnglish #Libya