Containment : n 1: a policy of creating strategic alliances in order to check
the expansion of a hostile power or ideology or to force
it to negotiate pecefully; "containment of communist
expansion was a central principle of United States'
foreign policy from 1947 to the 1975"
2: (physics) a system designed to prevent the accidental
release of radioactive material from a reactor
3: (military) the act of containing something or someone;
keeping it from spreading; "the army was charged with the
containment of the rebel forces"