美军在伊朗境内发起攻击？美国防部回应

Group 1 - The U.S. Department of Defense maintains a defensive posture and will protect U.S. military and national interests [1][2] - Sean Parnell, a spokesperson for the Department of Defense, denied reports of U.S. military attacks within Iran [2] - The U.S. Northern Command has increased security at all military facilities across the country due to global developments [3] Group 2 - On June 13, Israel launched large-scale airstrikes against Iran, leading to a retaliatory response from Iran targeting Israeli military centers and air bases, escalating regional tensions [4]