Military alliances involving Poland

The North Atlantic Treaty Organization (NATO) is an intergovernmental military alliance between 32 member states—30 in Europe and two in North America. Founded in the aftermath of World War II, NATO was established with the signing of the North Atlantic Treaty in 1949. The organization serves as a system of collective security, whereby its independent member states agree to mutual defence in response to an attack by any outside party. This is enshrined in Article 5 of the treaty, which states that an armed attack against one member shall be considered an attack against them all.

European Eastern Military Alliance (1954 – 1991)

1941 treaty between the Soviet Union and Poland

treaty

1920 alliance between Poland and Ukraine

1921 alliance between France and Poland

organization

series of treaties between Poland and Romania (1921–1939)

1524 alliance between France and Poland