This matching question tests students' understanding of key concepts in international security. Confidence Building Measures (CBMs) are mechanisms to build trust between nations through regular exchange of defence information, reducing the risk of misunderstanding or accidental conflict. Arms Control refers to agreements that regulate how weapons are acquired or developed, limiting their spread and use. Alliance refers to a coalition of nations that come together to deter or defend against military attacks, providing collective security. Disarmament is the process of giving up certain types of weapons entirely, aiming to reduce the overall number of weapons in existence.