U.S. Defense Secretary Lloyd Austin pledged today, Monday, that "the United States will take all necessary measures to defend American forces," expressing his "anger and sorrow" over an attack by Iran-backed militants using a drone yesterday, Sunday, which resulted in the deaths of three American soldiers and injuries to dozens more. Speaking at the Pentagon, he said: "Let me start by expressing my anger and sorrow over the deaths of three brave American soldiers in Jordan and the other soldiers who were injured." Austin affirmed that "the president and I will not tolerate attacks on American forces, and we will take all necessary steps to defend the United States and our forces."