Answer:
Secession (derived from the Latin term secessio) is the withdrawal of a group from a larger entity, especially a political entity, but also from any organization, union or military alliance. Threats of secession can be a strategy for achieving more limited goals.
Explanation:
Nixon used the new US closeness to China to negotiate the agreement with the Soviet Union. When relations between China and the Soviet Union deteriorated, the United States established diplomatic relations with China to weaken the influence of the Russians. Later the U.S. and U.S.S.R. signed the Anti-Ballistics treaty that limited the number of missiles on both sides but improved relations between them.
I believe the answer to this is D.
