Why was it formed and what was its objective?
The NSG was founded in reaction to the Indian nuclear test in May 1974. The main objective of the body, to begin with, was to make sure that the nuclear energy was used only for peaceful purposes and not for weapon-making.
India, Pakistan, Israel and South Sudan are among four UN member states which have not signed the NPT, the international pact aimed at preventing the spread of nuclear weapons.
Membership of NSG helps ease the transfer of technology, raw materials among the participant countries and US companies.