Do all NATO countries have to agree?
Michael Green
Published Apr 23, 2026
The Alliance takes all its decisions by consensus. Every member country, no matter how large or small, has an equal say in discussions and decisions. Member states are committed to individual liberty, democracy, human rights and the rule of law. These values are at the heart of NATO's transatlantic bond.
Do all NATO members have to agree?
All NATO decisions are made by consensus, after discussion and consultation among member countries. A decision reached by consensus is an agreement reached by common consent.Can countries in NATO fight each other?
“The Treaty doesn't dedicate any explicit provisions regarding members attacking each other.” The goal of collective defence is codified in Article 5 NAT. It states that an attack against one member of NATO should be considered an attack against all.Does admission to NATO have to be unanimous?
NATO accession process, unanimity requiredBut in order for a country to join NATO, unanimous approval is required, which equals the approval of all 30 existing allied countries. NATO membership normally requires a long process. For this, a multi-stage process is required to be completed.