Indonesia on Monday formalized ratification of the nuclear test ban treaty at the United Nations and its foreign minister called on eight key holdout nations to take a "calculated risk" and sign on. Indonesia is the 157th country to adopt the Comprehensive Test Ban Treaty (CTBT) but eight more nations in a core group of 44 nuclear countries -- China, Egypt, India, Iran, Israel, Pakistan, Russia and United States -- must still ratify to bring the global ban into force. Foreign Minister Marty Natalegawa said a "trust deficit" over the intentions of other nuclear states often holds back countries.
