The term "military coup" refers to the illegal overthrow of a government by armed forces or military personnel. This action often results from dissatisfaction with the ruling regime, political instability, or perceived threats to national security. Coups can lead to the establishment of a military dictatorship, which typically suspends democratic processes and imposes authoritarian rule. The legitimacy of such actions is often contested, as coups undermine civil liberties and can provoke widespread unrest. Their impact on a nation's political landscape can be profound, including changes in governance and international relations.