containment

Noun

• the act of containing; keeping something from spreading
  • the containment of the AIDS epidemic
    
  • the containment of the rebellion
    

• (physics) a system designed to prevent the accidental release of radioactive material from a reactor

• a policy of creating strategic alliances in order to check the expansion of a hostile power or ideology or to force it to negotiate peacefully
  • containment of communist expansion was a central principle of United States' foreign policy from 1947 to the 1975