Domestically, revolutions cause massive upheavals of the political structures within a state, which affect its relations with neighboring states. On an international level, revolutionaries may actively export their ideology abroad by means of propaganda, by supporting revolutionary movements, or by directly deploying military forces to confront neighboring states. Revolutions threaten the prevailing international order because neighboring states perceive revolutions as a threat to their state’s sovereignty, which may prompt non-revolutionary states to intervene.

“The neoconservative way . . . is to put an enormous emphasis on the importance of will in confronting and changing the world. America is currently in as unfavorable a position as it is because, more than anything, of a failure of will . . . [I]t can overcome adverse circumstances and prevail again by the mobilization and determined exercise of will.” –Owen Harries

Realism’s central theme of ‘the balance of power’ has been undermined in the post-Cold War, and more importantly, in the post 9/11 eras. However, Realism remains a realistic theoretical analysis of the contemporary international system. States will continue to bolster their power in terms of military capabilities to secure the survival of the state. Realism allows theorists to anticipate the incidence of war and foreign policy embraced by state actors pursuing relative power advantages.