I think Nigeria but i am not sure sorry i hope this helps :)
Answer:
The Helsinki Accords
Explanation:
The Helsinki Accords was an agreement that was signed at the end of the Conference on Security and Cooperation in Europe which 35 European plus the US and Canada signed. The main purpose of the Declaration was to reduce tension between East and West, reducing Cold War tensions.
A demilitarized zone is a zone where weapons and military aren't allowed
