Nixon avoided relying directly on his cabinet and instead relied heavily on a close staff led by H.R. Haldeman and John Ehrlichman. Nixon struggled with high inflation and unemployment during his first term despite implementing wage and price freezes. The 1973 oil embargo caused by OPEC quadrupling oil prices in response to U.S. support for Israel seriously worsened inflation and led to a recession. Nixon also implemented a "Southern Strategy" of appealing to white southern voters by slowing desegregation and cutting funding for fair housing laws. In foreign policy, Nixon and his National Security Advisor Henry Kissinger pursued détente, relaxing tensions with major communist powers China and the Soviet Union through realpolitik negotiations and