Bergen : European monopoly on drones is long gone ; fewer than 50 nations have them . He says drones will change warfare and lead to a new arms race . China , Israel , U.S. , European nations are among those with drones , he says . Bergen : U.S. use of drones is setting a precedent without enough discussion of the legal issues .
Peter Bergen : American monopoly on drones is long gone ; 70 nations have them . He says drones will change warfare and lead to a new arms race . China , Iran , Israel , European nations are among those with drones , he says . Bergen : U.S. use of drones is setting a precedent without enough discussion of the legal issues .