Facilitating market development across the WEU

The Western European Union (WEU) was an international organization and defence alliance established by the Modified Brussels Treaty of 1954, building upon the original Brussels Treaty of 1948, aimed at mutual defence and cooperation among European countries. It existed from 1954 until its dissolution in 2011, with its responsibilities and functions gradually being absorbed by the European Union (EU). As the EU evolved and expanded its competencies in defence and security, the WEU's functions were transferred to EU institutions. The Treaty of Amsterdam (1997) and the Treaty of Lisbon (2009) were significant in this process, formally incorporating many WEU functions into the EU's Common Security and Defense Policy (CSDP). The WEU played a crucial role in the post-World War II reconstruction of Europe and in laying the groundwork for the EU's current defence and security structures. By facilitating market development, standardising defence practices, and promoting economic integration, the WEU contributed significantly to the stability and prosperity of Western Europe.