President Biden directed airstrikes on Iran-backed militia groups in the Iraq-Syria border area in response to unmanned aerial lorry attacks, Pentagon press secretary John Kirby said in a declaration Sunday.Details: U.S. military forces performed the “protective accuracy airstrikes” versus facilities used by Iran-backed militia groups in the region on Sunday evening, stated Kirby, who worried the U.S. strikes were legal and in self-defense. “The targets were picked since these facilities are made use of by Iran-backed militias that are engaged in unmanned aerial vehicle (UAV) attacks versus U.S. personnel and facilities in Iraq,” he added.”Of note: McNulty stated its too early to examine whether there had actually been any casualties.British tracking group the Syrian Observatory for Human Rights said “at least five Iran-backed Iraqi militia fighters were eliminated and numerous others were wounded in an attack by U.S. warplanes” on Syrias side of the border, per AFP.The big picture: The airstrikes come at a time of increased stress between the U.S. and Iran, as the two nations hold talks on returning Tehran to the 2015 nuclear deal.What to view: Senators will consider reversing the 2002 Authorization for the Use of Military Force (AUMF) in Iraq after the House backed the action previously this month.Biden decreased to comment to press reporters on the latest airstrikes after returning to the White House Sunday evening from a weekend at Camp David, informing reporters: “Ill talk to you tomorrow,” CNN notes.Editors note: This article has been updated with new details throughout.