The Americans that attacked the compound where Khadr was were, like Khadr, wearing civilian clothing similar to that of the locals. 

This makes them, by the US military's own definition , terrorists just  much as Khadr. 

Too bad the relatives of the millions of innocent  men, women and children murdered....sorry , "accidentally" killed and gravely wounded when the US drops bombs on their cities, can't sue the US for wrongful death.
 That would put an end to state sponsored terrorism.