U.S. President-elect Donald Trump has picked Miami-Dade County Commissioner Kevin Marino Cabrera to serve as ambassador to Panama after having threatened for the U.S. to reassert control over the Panama Canal it handed over 25 years ago.

In a Christmas Day message on Truth Social, Trump sarcastically wished a merry Christmas to “the wonderful soldiers of China, who are lovingly, but illegally, operating the Panama Canal” and “making certain that the United States puts in Billions of Dollars in ‘repair’ money,

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 Washington's "extremely hostile" stance.

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.