Turkey's Prime Minister Tayyip Erdogan said on Monday Turkey wanted Iranian gas to be transported to Europe via the planned Nabucco pipeline “when conditions allow,” despite US opposition. European Union governments and Turkey signed transit agreements in Ankara late Monday for the EU and US-backed Nabucco pipeline, which aims to reduce Europe's energy dependence on Russia by transporting gas from the Caspian and Middle East through the planned pipeline from 2014. Transit countries Turkey, Bulgaria, Romania, Hungary and Austria also signed the accord, giving the 7.9 billion euro project a major boost. But questions over supply and financing still plague its feasibility and as progress of a rival Russian plan edges ahead. No concrete supply deals have yet been signed for Nabucco, which plans to pump 31 billion cubic meters of natural gas to Europe.