Alliance in the context of "Sphere of influence"

A puppet state, puppet régime, puppet government or dummy government is a state that is de jure independent but de facto completely dependent upon an outside power and subject to its orders. Puppet states have nominal sovereignty, except that a foreign power effectively exercises control through economic or military support. By leaving a local government in existence the outside power evades all responsibility, while at the same time successfully paralysing the local government they tolerate.

Puppet states differ from allies, who choose their actions of their own initiative or in accordance with treaties they have voluntarily entered. Puppet states are forced into legally endorsing actions already taken by a foreign power.

Diplomacy is the communication by representatives of state, intergovernmental, or non-governmental institutions intended to influence events in the international system.

Diplomacy is the main instrument of foreign policy which represents the broader goals and strategies that guide a state's interactions with the rest of the world. International treaties, agreements, alliances, and other manifestations of international relations are usually the result of diplomatic negotiations and processes. Diplomats may also help shape a state by advising government officials.

Realism, in international relations theory, is a theoretical framework that views world politics as an enduring competition among self-interested states vying for power and positioning within an anarchic global system devoid of a centralized authority. It centers on states as rational primary actors navigating a system shaped by power politics, national interest, and a pursuit of security and self-preservation.

Realism involves the strategic use of military force and alliances to boost global influence while maintaining a balance of power. War is seen as inevitably inherent in the anarchic conditions of world politics. Realism also emphasizes the complex dynamics of the security dilemma, where actions taken for security reasons can unintentionally lead to tensions between states.

Isolationism is a term used to refer to a political philosophy advocating a foreign policy that opposes involvement in the political affairs, and especially the wars, of other countries. Thus, isolationism fundamentally advocates neutrality and opposes entanglement in military alliances and mutual defense pacts. In its purest form, isolationism opposes all commitments to foreign countries, including treaties and trade agreements. In the political science lexicon, there is also the term of "non-interventionism", which is sometimes improperly used to replace the concept of "isolationism". "Non-interventionism" is commonly understood as "a foreign policy of political or military non-involvement in foreign relations or in other countries' internal affairs". "Isolationism" should be interpreted more broadly as "a foreign policy grand strategy of military and political non-interference in international affairs and in the internal affairs of sovereign states, associated with trade and economic protectionism and cultural and religious isolation, as well as with the inability to be in permanent military alliances, with the preservation, however, some opportunities to participate in temporary military alliances that meet the current interests of the state and in permanent international organizations of a non-military nature."

This contrasts with philosophies such as colonialism, expansionism, and liberal internationalism.