sentences:  U.S. policy changed markedly after the Six-Day War of 1967, in response to a perception that many Arab states (notably Egypt) had permanently drifted toward the Soviet Union.In 1968, with strong support from Congress, U.S. President Lyndon B. Johnson approved the sale of F-4 Phantom II fighters to Israel, establishing the precedent for U.S. support for Israel's qualitative military edge over its neighbors.The U.S., however, would continue to supply arms to Israel's neighbors, particularly Lebanon, Jordan and Saudi Arabia, in order to counter Soviet arms sales and influence in the region.