In this photo released by the semi-official Iranian Students News Agency (ISNA), a long-range S-200 missile is fired in a military drill in the port city of Bushehr, on the northern coast of Persian Gulf, Iran, Wednesday, Dec. 29, 2016. An Iranian general said Wednesday that his country's air defenses have warned off several fighter jets and drones during an ongoing military drill. Iranian air defense units began an exercise involving 17,000 personnel stationed over 496,000 square kilometers (190,000 square miles) in southern Iran on Monday. (Amir Kholousi, ISNA via AP)