Donald Trump boasted of ‘nuclear button’ in response to Kim Jong-un – but does he really have one?

US President Donald Trump boasted that he has a bigger and more powerful “nuclear button” than North Korean leader Kim Jong-un – but the president doesn’t actually have a physical button.
The president’s Tuesday evening tweet came in response to Kim’s New Year’s address, in which he repeated fiery nuclear threats against the United States. Kim said he has a “nuclear button” on his office desk and warned that “the whole territory of the…