Unilateralism

Unilateralism (literally "one"+"sided"-ism) is a political policy, which proscribes the blatant and outright support of one-sided action, even though this action may be contrary to compelling evidence supporting the opposition viewpoint.

Perhaps the most famous example of unilateralism was that of the Soviet Union during its existence; the USSR propogandically supported any form of communism while simultaneously denouncing the actions of the West. The United States has also practiced unilateralism at least since the end of Isolationism during World War I.