The use of drones creates a precedent that other states may use.  The United States is the first state with a large number of drones and other unmanned military vehicles. It is also the first country to use them. This inevitably means that the US is creating the precedent for how they will be used in future. The United States is aware of this potential and President Obama’s counterterrorism adviser John Brennan has stated “Other nations also possess this technology, and many more nations are seeking it, and more will succeed in acquiring it. President Obama and those of us on his national security team are very mindful that as our nation uses this technology, we are establishing precedents that other nations may follow, and not all of those nations may — and not all of them will be nations that share our interests or the premium we put on protecting human life, including innocent civilians.” [1] This is exactly the problem; do we really want to live in a world where any country can carry out targeted killings of people who are in another nation? Such a world would have the ever present risk of a covert conflict becoming a much more open shooting war.  [1] McNeal, Greg, ‘Is the U.S. Setting Precedents in its Drone Wars’, Forbes, 6 June 2012.