sentences:  In 1957, Saud decided to renew the U.S. base in Dhahran.In less than a year, after the Egyptian–Syrian unification in 1958, Egypt's pro-Soviet strategy had returned to power.Saud had once again joined their alliance, which declined the US-Saudi relationship to a fairly low point especially after he announced in 1961 that he changed his mind on renewing the U.S. base.