"The 1973 was the precipitating incident of the OPEC embargo. On October 6, Egyptian and Syrian forces caught the Israeli military off-guard on the most solemn Jewish holiday, when many soldiers were home with their families. Because the Arab-Israeli dispute was commonly viewed as yet another cold war proxy battle, the United States and its allies naturally lined up behind Israel against the Soviet-sponsored aggressors. Egypt’s President Anwar Sadat implored the Saudis and other Muslim states to use the “oil weapon” against Israel’s allies. On October 12, the Saudi-led OPEC demanded of the various Western companies doing business in the Middle East, including Aramco, a 100 percent increase in the posted price of their cartel's oil. The companies stalled for time. On October 16, the Persian Gulf region OPEC members broke off negotiations with the Western oil companies and announced that thereafter they would set prices themselves. On October 17, the Israelis gained the upper hand on the battlefield, thanks in large part to aggressive American resupply efforts, and began to push the Egyptians back across the and the Syrians out of the Golan Heights. [On] the same day, the Arab oil ministers announced an oil embargo on the United States, while increasing prices by 70 percent to western Europe. Overnight, the price of a barrel of oil to these nations rose from $3 to $5.11. On October 19, President Richard M. Nixon announced a military aid package for Israel. The following day, Saudi Arabia retaliated by announcing a total cutoff of oil exports to America."