Russia and the United States have not conducted a nuclear test since 1992 but Russia's Deputy Foreign Minister says his country "does not rule anything out".

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Moscow has warned Donald Trump against resuming the testing of nuclear weapons when he takes office, saying it would “not rule anything out” in response to US aggression.

Russia’s point man for arms control cautioned Donald Trump’s incoming administration on Friday against resuming nuclear testing, saying Moscow would keep its own options open amid what he said was Was

Ministers warned the US that its nuclear arsenal is intended to ‘sober up’ countries on the ‘brink of direct armed conflict’ with Russia

Moscow signals potential responses on nuclear testing as it faces a challenging international climate and what it calls an extremely hostile American policy under Trump's administration. Following discussions of a U.

Russia, with 5,580 warheads, and the United States, with 5,044, are by far the world's biggest nuclear powers, holding about 88% of the world's nuclear weapons, according to the Federation of American Scientists. China has about 500 warheads.

In this video, we explore the growing tensions between the U.S. and Russia over nuclear policies. During his presidency, Donald Trump took a radical stance against the Comprehensive Nuclear Test Ban Treaty (CTBT),