Final answer:
The belief in increased international cooperation and stronger diplomatic efforts over military power accumulation is termed 'liberal internationalism,' a perspective that values proactive global engagement and effective international institutions to promote world stability.
Step-by-step explanation:
The belief that increased cooperation between countries, along with stronger international institutions and a greater emphasis on diplomacy, will create a more stable world order than the alternative of countries emphasizing the accumulation of military power is associated with the foreign policy perspective of liberal internationalism. Liberal internationalism is a theory in international relations that advocates for a proactive engagement in world affairs, with a strong emphasis on cooperation among nations, creation of effective world structures such as the United Nations, and a reliance on diplomacy rather than military prowess. This perspective is contrasted with realism, which focuses on state security and the balance of power, often suggesting that military strength is essential to maintain a country's influence and security. A classic example of a liberal internationalist was President Woodrow Wilson, who, after World War I, pushed for the creation of the League of Nations as a way to preserve peace through collective security and cooperation. The idea of collective security is further reinforced by institutions like the North Atlantic Treaty Organization (NATO), which is formed to strengthen the security of each member state.