No group has claimed responsibility, but the attacks have heightened tensions between Baghdad and Kurdish authorities, raising concerns about the region’s energy security.

Drones targeted oil fields in Iraq’s semi-autonomous northern Kurdish region Wednesday, the latest in a series of attacks in recent days that have put several o

The semi-autonomous region did not confirm the export plan, but Baghdad and Erbil have been in negotiations since late February to end a stand-off that has halted flows from the north of the country to Turkey's Mediterranean port of Ceyhan.