1) US-Russia objective 2) US-Russian status 3) US-USSR breather 4) Absence of war 5) Accord 6) Alleviation 7) Certain lessening of tension 8) Cold war easing 9) Cold War follower 10) Cold War lull 11) Cold war period 12) Cold war thaw 13) Cold-War follower 14) Cooling off period 15) Cooling-off period 
(from the article `international relations`) Nixon, Kissinger, and the détente experimentGeneral Secretary Brezhnev and President Nixon were understandably optimistic in the wake of the endorsement by the 24th Party Congress of the Soviet ... ...registration for the draft, withdrew the SALT II treaty from the Senate, and proclaim...
Reduction of political tension and the easing of strained relations between nations, as seen in the ending of the Cold War 1989-90. The term was first used in the 1970s to describe the new easing...
[n] - the easing of tensions or strained relations (especially between nations)
detente In mechanics, a part that stops or releases a movement, as a catch for controlling the striking of a clock.
noun the easing of tensions or strained relations (especially between nations)
The relaxing of tension between the superpowers. See details in Successes and Failures of Détente in the Cold War.