This report discusses the background of the G-20 (an international forum for discussing and coordinating economic policies) and some of the issues that it has addressed. It includes historic background on the work of the G-20, information about how the group operates, overviews of G-20 summits, major issues that the group is likely to address and the likely effectiveness of the G-20 in the near future. The members of the G-20 include Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Mexico, Russia, Saudi Arabia, South Africa, South Korea, Turkey, the United Kingdom, the United States, and the European Union.

As an aid to Congress in understanding nuclear weapons, nuclear proliferation, and arms control matters, this report describes which agency is responsible for research and development (R&D) of nuclear weapons (i.e., nuclear explosive devices, as distinct from the bombers and missiles that deliver them) in the nine nations with nuclear weapons and whether these agencies are civilian or military. It also traces the history of such agencies in the United States from 1942 to the present.

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