In his annual New Years Day address, North Korean dictator Kim Jong Un claimed that he has a nuclear launch button on his desk at all times.
"The entire mainland of the US is within the range of our nuclear weapons and the nuclear button is always on the desk of my office. They should accurately be aware that this is not a threat but a reality," Un said.
Tuesday evening, President Trump responded via Tweet.
Naturally, many were concerned about this Nuclear-Button-Measuring-Contest.
According to a fact check by The Washington Post, there is not actually a nuclear button on The Resolute desk. Apparently, it's really more of a briefcase nicknamed "the football" with a card of verification codes referred to as "the biscuit".
[There are rumors that Jimmy Carter once sent his "biscuit" to the dry cleaners by accident, and that Bill Clinton even lost his and didn't tell anyone for a few months.]
You can read more about how it works below, if you want.
Let's just all pray for a diplomatic, non-nuclear solution to the tension between these two leaders.