Nuclear Suppliers Group (NSG)

Gray are the members

Nuclear Suppliers Group (NSG) is a multinational body concerned with reducing nuclear proliferationnuclear weapon by controlling the export and re-transfer of materials that may be applicable to development and by improving safeguards and protection on existing materials.

It was founded in 1974 in response to the Indian nuclear test earlier in that year. 

The test demonstrated that certain non-weapons specific nuclear technology could be readily turned to weapons development. 

Nations already signatories of the Nuclear Non-Proliferation Treaty (NPT) saw the need to further limit the export of nuclear equipment, materials or technology. 

Another benefit was that non-NPT and non-Zangger Committee nations, then specifically France, could be brought in.