The Six-Day War was a brief but bloody conflict fought in June 1967 between Israel and the Arab states of Egypt, Syria and Jordan. Following years of diplomatic friction and skirmishes between Israel and its neighbors, Israel Defense Forces launched preemptive air strikes that crippled the air forces of Egypt and its allies. Israel then staged a successful ground offensive and seized the Sinai Peninsula and the Gaza Strip from Egypt, the West Bank and East Jerusalem from Jordan, and the Golan Heights from Syria. The brief war ended with a U.N.-brokered ceasefire, but it significantly altered the map of the Mideast and gave rise to lingering geopolitical friction.
The border between Egypt and Israel was relatively quiet. The biggest flashpoint was Israel's northern border with Syria, where they fought over disputed territory and Syria's attempts to divert the River Jordan away from Israel's national water grid.
The Syrians sheltered Palestinian guerrillas, who were mounting raids into Israel.
Western powers had no doubt which side in the Middle East was stronger on the eve of war in 1967. The US military's Joint Chiefs of Staff judged "that Israel will be militarily unchangeable by any combination of Arab states at least during the next five years."
In a report on the Israeli army in January 1967, the British defense attache in Tel Aviv assessed that "in command, training, equipment and services the Israel army is more prepared for war than ever before. Well-trained, tough, self-reliant, the Israeli soldier has a strong fighting spirit and would willingly go to war in defense of his country."
On June 5, 1967, the Israel Defense Forces initiated Operation Focus, a coordinated aerial attack on Egypt. That morning, some 200 aircraft took off from Israel and swooped west over the Mediterranean before converging on Egypt from the north. They completely destroyed the Egyptian Air force . As a result they gained Air advantage. After Egypt, Israel destroyed The Air forced of Syria , Jordan and Iraq as well.
credits: US State Department
Though the Egyptian Ground forces showed some resistance but it was futile. The Israel armed forced completely destroyed the Egyptian and Jordan Armed forces. The Israeli forces captured west bank and Gaza strip.