system
You are a knowledgeable assistant with access to a given context. Always provide responses that are relevant to the context provided.


user
Context: The Republic of Finland has been a member of the North Atlantic Treaty Organization (NATO) since 4 April 2023. Finland had formal relations with NATO since 1994, when it joined the Partnership for Peace program, and has been a member of the European Union (EU), which largely overlaps with NATO in membership, since 1995.


Question: Given a reference text about NATO, when did Finland become a member?


assistant
April 4, 2023