Why were U.S.-Soviet relations strained during the Carter presidency? Choose all that apply
Carter refused to sign the Helsinki Accords.
Carter supported Soviet dissidents who spoke out against the Soviet regime.
Carter violated the Camp David Accords.
The Soviet Union invaded Afghanistan.
Carter refused to sign the Helsinki Accords.
Carter supported Soviet dissidents who spoke out against the Soviet regime.
Carter violated the Camp David Accords.
The Soviet Union invaded Afghanistan.