Russia's point man for arms control cautioned Donald Trump's incoming administration against resuming nuclear testing, saying Moscow would keep its own options open.

Russia warns of potential nuclear testing in response to Trump's stance, raising concerns about global security.

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.

After the US and Russia tested a nuclear bomb in the 1990s, Russia signed the Comprehensive Nuclear Test Ban Treaty in 1996 and ratified it in 2000.

Is the world nearing a nuclear showdown? Russia has issued a dire warning to the U.S., raising concerns about the future of the Comprehensive Nuclear Test Ban Treaty. Russian Deputy Foreign Minister Sergei Ryabkov has called U.