text: No country develops nuclear weapons and ICBMs for peaceful purposes.
  However, since the end of WWII how many nuclear weapons have been used by one country against another?
  Zero.
  And (hat tip: MM2) US leaders, in the past few decades, have called other nuclear countries' leaders mad, insane, crazy, etc. and they have called our leaders the same, and yet the number of nuclear weapons used is still:
  Zero.