Western Europe is the region comprising the westerly countries of Europe. While the term has a geographic context, another main definition developed during the Cold War (approx. 1945-1991) to describe the countries associated with the Western European Union (1954–2011; now part of the European Union (EU)), a defensive alliance drafted in 1948 among non-communist European nations during the Cold War, as opposed to the countries of the Eastern Bloc (or Warsaw Pact). Countries culturally and geographically associated with other European regions that steered clear of Soviet influence during the Cold War are usually included, while western members of the former Eastern Bloc (with the exception of Eastern Germany) are excluded.^{[citation needed]}

Countries described as Western European are invariably high-income developed countries, characterized by democratic^{[citation needed]} political systems, mixed economies combining the free market with aspects of the welfare state, and most are members of NATO and the EU.