thumb|American troops detain members of the Grenadian People's Revolutionary Army (Grenada)|PRA in 1983.|alt=Two men in civilian clothes with their hands on their backs walk surrounded by three armed men in uniform. Military jeeps are seen in a second plane. In political science, rollback is the strategy of forcing a change in the major policies of a state, usually by replacing its ruling regime. It contrasts with containment, which means preventing the expansion of that state, and with détente, which means developing a working relationship with that state. Most of the discussions of rollback