Whether specifically intended or not, innocents are continuing to be killed by the drone attacks favored by Bill Clinton, George W. Bush and Barack Obama.  

They keep on doing it knowing that these innocents are likely, and in some cases certain to die. 
 
Even the raid to kill Osama bin Laden " Estimates were that up to a dozen civilians would be killed in addition to those in the compound." Only four other people were killed besides bin Laden, one was the wife of the courier who unknowingly  led them to his location.

When Trump made his statement, he is really acknowledging what is in fact US policy; innocents must die to win against the terrorists.  This has been US policy for at least the last 24 years against terrorists.

The policy really was developed during the carpet bombing of World War II in response to the Blitz of London.  Take a look at our bombing of Dresden, or Hiroshima or Nagasaki.