In 1973, Egypt, along with Syria, launched the October War, a surprise attack against the Israeli forces occupying the Sinai Peninsula and the Golan Heights. It was an attempt to regain part of the Sinai territory that Israel had captured six years earlier. Sadat hoped to seize some territory through military force, and then regain the rest of the peninsula by diplomacy. The conflict sparked an international crisis between the US and the USSR, both of whom intervened. The second UN-mandated ceasefire halted military action. While the war ended with a military stalemate, it presented Sadat with a political victory that later allowed him to regain the Sinai in return for peace with Israel.