Head of organization overseeing nuclear test ban treaty issues warning to US and Russia

EDITH M. LEDERER Thu, April 30, 2026 at 2:45 AM UTC

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Rafael Grossi, International Atomic Energy Agency (IAEA) Director General and a candidate for United Nations Secretary-General, speaks during an informal dialogue at U.N. headquarters, Tuesday, April 21, 2026. (AP Photo/Yuki Iwamura) ()

UNITED NATIONS (AP) — The head of the organization overseeing a treaty banning nuclear testing warned Wednesday that if the United States, Russia or any other nation goes ahead with a test, other nations will follow.

“That is a spiral that we do not want to see start, because it may never be able to be stopped,” Robert Floyd, executive secretary of the Comprehensive Nuclear Test Ban Treaty Organization, told U.N. correspondents.

Late last year, both the United States and Russia, which have the world’s largest nuclear arsenals, threatened to resume nuclear testing, setting off global alarm bells.

When the treaty known as the CTBT opened for signatures 30 years ago, Floyd said over 2,000 nuclear tests had taken place, but since then there have been fewer than a dozen, including six by North Korea.

Floyd issued his warning as the United Nations this week began its review of a separate treaty meant to prevent the spread of nuclear weapons. The review is taking place against the backdrop of the Iran war, which President Donald Trump said was necessary to prevent Tehran from obtaining a nuclear weapon.

The test ban treaty was adopted in 1996 but has not entered into force because it must be ratified by 44 specific countries, and nine of them have not yet done so.

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The United States, China, Iran, Egypt and Israel have signed but not ratified the treaty. India, Pakistan and North Korea have neither signed nor ratified. Russia signed and ratified, but revoked its ratification in 2023.

Floyd said a way needs to be found for China, Russia and the U.S. to ratify the treaty together, which he said would “certainly be a powerful step forward.”

China and Russia have said they adhere to a nuclear testing moratorium, but since 2019 the U.S. State Department has publicly expressed concerns about the activities of both countries. At the end of last year, Trump accused Russia and China of conducting tests and said he had instructed the Defense Department to start testing nuclear weapons “on an equal basis.”

Russian Deputy Foreign Minister Sergei Ryabkov said in response that Russia would only resume nuclear tests if Washington did so first.

Floyd said he was recently in Moscow and made the case to Foreign Minister Sergey Lavrov “that it is not in any state’s interest to see an unconstrained return to testing.” He said he has met with U.S. State Department officials and would welcome the opportunity to meet with Secretary of State Marco Rubio.

Floyd said the treaty's international monitoring system can detect even a relatively small nuclear weapons explosion anywhere in the world. Any state thinking of developing a nuclear weapon would need to test one and “if they did it will be known to all,” he said.

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Source: “AOL Breaking”