Treaty of Tlatelolco

Year signed1967
TypeArms Control
RegionAmericas
Parties33 Latin American and Caribbean states

About the Treaty of Tlatelolco

Negotiated in Mexico City, it created the first nuclear weapon free zone over a densely populated region. States renounce nuclear weapons and accept International Atomic Energy Agency safeguards, with protocols binding the five recognized nuclear powers. Argentina and Brazil completed adherence only after their 1990s rapprochement, and Cuba joined in 2002, bringing every state in the region in.

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