In politics, hard power is the use of military and economic means to influence the behavior or interests of other political bodies. This form of political power is often aggressive (coercion), and is most immediately effective when imposed by one political body upon another of less military and/or economic power. Hard power contrasts with soft power, which comes from diplomacy, culture and history.
According to Joseph Nye, hard power involves "the ability to use the carrots and sticks of economic and military might to make others follow your will". Here, "carrots" stand for inducements such as the reduction of trade barriers, the offer of an alliance or the promise of military protection. On the other hand, "sticks" represent threats - including the use of coercive diplomacy, the threat of military intervention, or the implementation of economic sanctions. Ernest Wilson describes hard power as the capacity to coerce "another to act in ways in which that entity would not have acted otherwise".
While the existence of hard power has a long history, the term itself arose when Joseph Nye coined soft power as a new and different form of power in a sovereign state's foreign policy. According to the realist school in international relations theory, power is linked with the possession of certain tangible resources, including population, territory, natural resources, economic and military strength, among others. Hard power describes a nation or political body's ability to use economic incentives or military strength to influence other actors’ behaviors.
Hard power encompasses a wide range of coercive policies, such as coercive diplomacy, economic sanctions, military action, and the forming of military alliances for deterrence and mutual defense. Hard power can be used to establish or change a state of political hegemony or balance of power. Although the term hard power generally refers to diplomacy, it can also be used to describe forms of negotiation which involve pressure or threats as leverage.