In Iraq, an airstrike by the U.S.-led coalition has killed 10 Iraqi soldiers in the latest incident of so-called friendly fire. U.S. Defense Secretary Ash Carter acknowledged a U.S. aircraft carried out the strike Friday, but said it resulted from mistakes on both sides. Carter said he had spoken to Iraqi Prime Minister Haider al-Abadi.

Secretary of Defense Ash Carter: “I explained to him our regret, and he and I agreed that this was an event that we both regretted and that there would be an investigation of it, but that these kinds of things happen when you’re fighting side by side, as we are.”