6th October 1973, Yom Kippur, Egypt invaded Sinai and Syria Golan simultaneously, initial Arab gains as Israeli army not fully mobilised but Israel, with US support, drove them back, conquering new territory
Israeli military victory but Arab political success; showed Israel wasn’t invincible and Arabs could cooperate, also oil embargoes perceived weapons against West and Israel so US compelled to be more friendly to Arabs and negotiate Middle East peace