Israel re-iterated that the Straits of Tiran closure was a Casus belli. This prompted the beginning of the Third Arab Israeli War (Six-Day War) in which Israel attacked Egypt, and occupied Sinai Peninsula and the Gaza Strip, which Egypt had occupied since the 1948 Arab-Israeli War. During the 1967 war, an Emergency Law was enacted, and remained in effect until 2012, with the exception of an 18-month break in 1980/81. Under this law, police powers were extended, constitutional rights suspended and censorship legalised.