Nuclear Energy Agency purposes."" NEA currently consists of 33 countries from Europe, North America and the Asia-Pacific region. In 2017 Argentina and Romania accessioned to NEA as its most recent members. Together they account for approximately 85% of the world’s installed nuclear capacity. Nuclear power accounts for almost a quarter of the electricity produced in NEA Member countries. The NEA works closely with the International Atomic Energy Agency (IAEA) in Vienna and with the European Commission in Brussels. Within the OECD, there is close co-ordination with the International Energy Agency and the Environment Directorate, as well as contacts with other directorates, as appropriate.
International Atomic Energy Agency and will become a Member State if they deposit the necessary legal instruments. Four states have withdrawn from the IAEA. North Korea was a Member State from 1974 to 1994, but withdrew after the Board of Governors found it in non-compliance with its safeguards agreement and suspended most technical co-operation. Nicaragua became a member in 1957, withdrew its membership in 1970, and rejoined in 1977, Honduras joined in 1957, withdrew in 1967, and rejoined in 2003, while Cambodia joined in 1958, withdrew in 2003, and rejoined in 2009. There are four regional cooperative areas within IAEA, that share information, and