2022–2023
Abandonment of Historic Military Neutrality and Decision to Join NATO
Following Russia's invasion of Ukraine, Niinistö and the government led Finland's historic shift towards NATO membership, ending decades of military non-alignment. The decision received broad domestic support but represented a controversial geopolitical choice, condemned by Moscow and debated by supporters of neutrality.
- State of the evidence
- political decision and official accession documented
- Legal status — source text
- no legal proceedings
- Attribution
- political responsibility shared with the government and Parliament
Sources · 2
- [1]
- [2]
Last verified: 31 August 2026
