UAV drone crashed in Iran

The New York Times reported a crash of an American UAV in Iran a couple of days ago. The UAV model was RQ170, a stealth type UAV. While it shows the military capability of USA, it also shows how the term "justice" is actually a joke when it comes to American or Israeli interest. It could be true that Iran may poses some nuclear capability, but who is watching over the American & Israeli nuclear warhead? The world will never be in peace if there are some one/body/country/etc who is above the law.