Official audit log and status changelog documenting Sweden's NATO alignment.
Sweden formally concluded its accession process on March 7, 2024, by officially depositing its instrument of accession to the North Atlantic Treaty with the United States Government in Washington, D.C. Sweden became the 32nd allied member of NATO.
Sweden now participates fully under Article 5 collective defense guarantees and within all NATO decision-making bodies.
Following a historic security policy recalibration triggered by the February 2022 full-scale invasion of Ukraine, Sweden submitted its formal letter of application to join NATO on May 18, 2022.
Accession protocols were signed at NATO Headquarters in July 2022. The formal transition concluded after all 31 existing allied parliaments ratified Sweden's membership protocol.
For more than two centuries, Sweden maintained a doctrine of military non-alignment during peacetime and neutrality in wartime. Sweden declined founding NATO membership in 1949.
While maintaining non-member status throughout this era, Sweden joined NATO's Partnership for Peace (PfP) program in 1994 and routinely contributed to NATO-led peacekeeping missions.