https://www.nato.int/cps/en/natohq/topics_49212.htm
“NATO’s door remains open to any European country in a position to undertake the commitments and obligations of membership, and contribute to security in the Euro-Atlantic area. Since 1949, NATO’s membership has increased from 12 to 32 countries through 10 rounds of enlargement. Sweden became the latest country to join the Alliance on 7 March 2024. Currently, three partner countries have declared their aspirations to NATO membership: Bosnia and Herzegovina, Georgia and Ukraine.”