Citing the UN’s proposed sanctions, North Korea spent the weekend declaring the 1953 armistice agreement that ended the Korean War to be invalid. “The U.S. has reduced the armistice agreement to a dead paper,” its state newspaper read. This isn’t technically the first time North Korea has rattled this particular saber, but it just wouldn’t be a Monday without a bizarrely poetic threat of war from Kim Jong-Un. In addition, this particular nullification has a little extra weight, since North Korea cut off its emergency direct phone line to South Korea—a sort of bat signal one could use to call the other and sort things out when tensions got unbearable …