Nixon resigned in 1974 under the threat of impeachment and was succeeded by [[Gerald R. Ford]], who kept Nixon's policies. The US was not involved in 1975 when North Vietnam invaded and defeated South Vietnam, except to rescue Americans and some Vietnamese supporters. Over a million Vietnamese refugees, and many Hmong from Cambodia, eventually came to the U.S. In 1976 Ford was challenged by [[Ronald Reagan]] for the GOP nomination. Ford won, but the détente policy was the focus of Reagan's attacks, as the GOP moved to the right. [[Jimmy Carter]] continued the détente policy until the Soviet invasion of Afghanistan in late 1979 destroyed that policy and reopened the [[Cold War]] at a more intense level. | Nixon resigned in 1974 under the threat of impeachment and was succeeded by [[Gerald R. Ford]], who kept Nixon's policies. The US was not involved in 1975 when North Vietnam invaded and defeated South Vietnam, except to rescue Americans and some Vietnamese supporters. Over a million Vietnamese refugees, and many Hmong from Cambodia, eventually came to the U.S. In 1976 Ford was challenged by [[Ronald Reagan]] for the GOP nomination. Ford won, but the détente policy was the focus of Reagan's attacks, as the GOP moved to the right. [[Jimmy Carter]] continued the détente policy until the Soviet invasion of Afghanistan in late 1979 destroyed that policy and reopened the [[Cold War]] at a more intense level. |