coalition, fusion - the state of being combined into one body

connection, connexion, connectedness - a relation between things or events (as in the case of one causing the other or sharing features with it); "there was a connection between eating that pickle and having that nightmare"

silver cord - the emotional bond between a mother and her offspring

combination - an alliance of people or corporations or countries for a special purpose (formerly to achieve some antisocial end but now for general political or economic purposes)

organization, organisation - a group of people who work together

allies - an alliance of nations joining together to fight a common enemy

bloc, axis - a group of countries in special alliance

Allies - in World War I the alliance of Great Britain and France and Russia and all the other nations that became allied with them in opposing the Central Powers

Central Powers - in World War I the alliance of Germany and Austria-Hungary and other nations allied with them in opposing the Allies

Allies - the alliance of nations that fought the Axis in World War II and which (with subsequent additions) signed the charter of the United Nations in 1945

Axis - in World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations; "the Axis opposed the Allies in World War II"

entente, entente cordiale - an informal alliance between countries

popular front - a leftist coalition organized against a common opponent

global organization, international organisation, international organization, world organisation, world organization - an international alliance involving many different countries

ally - a friendly nation

Northern Alliance, United Front - a multiethnic alliance in Afghanistan who practice a moderate form of Islam and are united in their opposition to the Taliban

pact, treaty, accord - a written agreement between two states or sovereigns

group action - action taken by a group of people