If Erdogan blocks Finland and Sweden from joining NATO, expel Turkey

Europe's security environment has changed since Russia launched its full-scale invasion of Ukraine. Neutrality no longer guarantees security from Russian aggression. In a historic turning point for Finland and Sweden, both Nordic countries have applied to join NATO. Even though their joint accession would strengthen NATO's security architecture, President Recep Tayyip Erdogan is threatening to veto their applications. Unfortunately, Turkey continues to destabilize the Alliance at a time when NATO needs unity most. If President Erdogan blocks Finland and Sweden from joining NATO, the free world should expel Turkey from the Alliance.[Ed. note: This article was written before Turkey suggested it may admit Finland without Sweden.]

Article 2 of the North Atlantic Treaty states that members must strengthen their democratic institutions, promote conditions of stability and well...