An agreement between oil producers to curtail their output could bring the market back into balance sooner than expected, but significant questions remain over how such a deal would be implemented and its longer-term impact, The International Energy Agency’s executive director said Monday. The IEA has predicted that left to its own devices, the oil market would rebalance in the second half of 2017, but a deal between producers could hasten this shift, Fatih Birol told reporters on the sidelines of an energy conference in Istanbul. However, the IEA’s executive director also highlighted questions that still remain over how production cuts will be allocated and the impact of a price increase on shale producers in the U.S. “I think we all need to see those two question marks when we look at the discussions […]