Moshe Arens (Hebrew: משה ארנס‎, born 27 December 1925) is an Israeli aeronautical engineer, researcher and former diplomat and politician. A member of the Knesset between 1973 and 1992 and again from 1999 until 2003, he served as Minister of Defense three times and once as Minister of Foreign Affairs. Arens has also served as the Israeli ambassador to the U.S. and was professor at the Technion in Haifa.