Oh, the US edumacation system be lettin' you down.

Without googling and just recently -- Iraq, Nicaragua, Panama, Iran, Chile, Honduras, Libya, Vietnam, Somalia, Lebanon  ...and Donald Trump just bragged about bombing Syria between bites of his beautiful chocolate cake. 

 I know it's hard to keep track, but it's illegal to invade other countries, kill their leaders and set up puppet dictators - even one's as useful to the us as the shah of Iran, or Saddam, or Noriega, etc.