The Western Coalition is a term used to refer to a group of countries that have formed an alliance in order to promote peace and stability in the region. The term was first used in the early 1990s, when the United States, Canada, and Mexico formed the North American Free Trade Agreement (NAFTA). Since then, other countries have joined the coalition, including Australia, New Zealand, Japan, South Korea, and the European Union. The term POSSE is an acronym for the phrase 'Peaceful Open Security and Stability Environment', which is the goal of the Western Coalition.