Israeli occupation of the Sinai Peninsula
The Sinai Peninsula, which is a part of Egypt, has been militarily occupied by Israel twice since the beginning of the Arab–Israeli conflict: the first occupation lasted from October 1956 to March 1957, and the second occupation lasted from June 1967 to April 1982. Taba, Egypt, the only territory which was not returned in 1982, was returned to Egypt in 1989.
Source: Wikipedia — Israeli occupation of the Sinai Peninsula (CC BY-SA 4.0)