This is not news. The Israelies and the United States have been using drones for somd time now. Perhaps it is that new concept of "unreasonable forcd". After all, the other guy does not have drones so Israel and the U. S. are not playing fair.
Islamic State blows up tower tombs in Syria's Palmyra (Reuters)
from the article: WikiLeaks: IDF uses drones to assassinate Gaza militants