Oil prices rose $1 on Thursday after drones struck Iraqi Kurdistan oil fields for a fourth day, pointing to continued risk in the volatile region.

The United States Embassy in Iraq, in a statement: "The United States condemns the recent drone attacks throughout Iraq, including the July 14 and July 15 drone attacks on critical infrastructure at the Khurmala and Sarsang oil fields in the Iraqi Kurdistan Region."

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