There's no physical button, but there is a "football" and "biscuit". Read more about Trump's taunting tweet on Vox.com here: http://bit.ly/2EpdQED. Subscribe to our channel! http://goo.gl/0bsAjO Just a week into 2018, Donald Trump tweeted a provocative message directed at the North Korean regime's leader, Kim Jong Un. His message cited a "nuclear button", and claimed that his was much larger than Kim's. But how does the U.S. protocol for launching nuclear warheads actually work? It's a process that's designed to be fast - there are only a few steps. But it's still more complicated than a simple button. Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com to get up to speed on everything from Kurdistan to the Kim Kardashian app. Check out our full video catalog: http://goo.gl/IZONyE Follow Vox on Twitter: http://goo.gl/XFrZ5H Or on Facebook: http://goo.gl/U2g06o