North Korean Leader Kim Jong Un just stated that the “Nuclear Button is on his desk at all times.” Will someone from his depleted and food starved regime please inform him that I too have a Nuclear Button, but it is a much bigger & more powerful one than his, and my Button works!
So, is there a literal button on his desk that launches a nuclear strike or is a "nuclear button" figurative?
There is no nuclear button. Rather, it refers to the "nuclear football", which is a series of launch codes used to authorize a nuclear strike.
... his tweet referred to the “nuclear football,” a series of launch codes contained in a briefcase that the president must enter in order to authorize a nuclear strike—one that no country has ordered since President Harry Truman dropped nuclear weapons on Japan to force it to surrender in World War II.