The Soviet Union’s support of Syria prompted The United States to send supplies to Israel during the Yom Kippur war of 1973.
On October 6, 1973, in an attempt to gain back territory lost to Israel during the third Arab-Israeli war, in 1967, Egyptian and Syrian forces launched a coordinated attack against Israel on Yom Kippur, the holiest day in the Jewish calendar.
Israel counterattacked and won back the Golan Heights. A cease-fire went into effect on October 25, 1973.