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UN official: Iran, Israel could ratify nuke test ban treaty

FILE - In this Sept. 27, 2013 file photo, the Comprehensive Nuclear Test Ban Treaty Executive Secretary Lassina Zerbo speaks during a news conference during the 68th session of the United Nations General Assembly at U.N. headquarters.  Lerbo says arch-enemies Iran and Israel are "the closest" of the eight holdout nations to ratifying the treaty and assuring the world they will never conduct a nuclear test explosion.(AP Photo/Jason DeCrow)
FILE - In this Sept. 27, 2013 file photo, the Comprehensive Nuclear Test Ban Treaty Executive Secretary Lassina Zerbo speaks during a news conference during the 68th session of the United Nations General Assembly at U.N. headquarters. Lerbo says arch-enemies Iran and Israel are "the closest" of the eight holdout nations to ratifying the treaty and assuring the world they will never conduct a nuclear test explosion.(AP Photo/Jason DeCrow) FILE - In this Sept. 27, 2013 file photo, the Comprehensive Nuclear Test Ban Treaty Executive Secretary Lassina Zerbo speaks during a news conference during the 68th session of the United Nations General Assembly at U.N. headquarters. Lerbo says arch-enemies Iran and Israel are "the closest" of the eight holdout nations to ratifying the treaty and assuring the world they will never conduct a nuclear test explosion.(AP Photo/Jason DeCrow)

VIENNA (AP) – The head of the U.N. nuclear test ban treaty organization says arch-enemies Iran and Israel are “the closest” of the eight holdout nations to ratifying the treaty and assuring the world they will never conduct a nuclear test explosion.

Lassina Zerbo said this week that having Iran and Israel ratify together would “certainly” lead to Egypt’s ratification, and pave the way for a nuclear test-free zone in the Middle East.

The Comprehensive Nuclear Test Ban Treaty, known as the CTBT, has 196 member states – 183 that have signed the treaty and 164 that have ratified it. But the treaty has not entered into force because it still needs ratification by eight countries that had nuclear power reactors or research reactors when the U.N. General Assembly adopted the treaty in 1996: the United States, China, Iran, Israel, Egypt, India, Pakistan and North Korea.

Zerbo, speaking during a week-long conference marking the 20th anniversary of the treaty being opened for signing, said he doesn’t expect immediate results on ratification, but is hoping to visit both Iran and Israel and talk to their leaders because “I think that they’re the ones who can unlock what is stopping the CTBT from moving.”

In a briefing and an interview, he said that implementation of last summer’s deal to rein in Iran’s nuclear program – and confirmation from Israeli and international scientists that Tehran can’t produce nuclear weapons – would mean “the biggest threat for Israel is gone and over.”