Conversation so far:
what was detente?
Kissinger pioneered the policy of detente with the Soviet Union.
what was the policy about?
seeking a relaxation in tensions between the two superpowers.
was it successful?
Negotiations about strategic disarmament were originally supposed to start under the Johnson Administration but were postponed in protest upon the invasion by Warsaw.
Are there any other interesting aspects about this article?
Kissinger sought to place diplomatic pressure on the Soviet Union.

Question: why did he want to do this?
Self-contained rewrite: why did Kissinger want to place diplomatic pressure on the Soviet Union?