Ukrainian President Volodymyr Zelenskyy says U.S. President-elect Donald Trump is “strong and unpredictable” and those qualities can be a decisive factor in his policy approach to Russia’s invasion of

Russia's arms control point man cautioned Donald Trump's incoming administration on Friday that Moscow was considering a whole range of possible steps on nuclear testing due to what it said was Trump's radical position on the issue.

Russia considered a nuclear strike on Ukraine. China has warned Moscow against using nuclear weapons, US Secretary of State Antony Blinken told the Financial Times. He notes the United States was “very concerned” because Russian President Vladimir Putin was probably considering a nuclear option against Ukraine.