"An American general told Peter Singer once that insurgents most fear America's unmatched technology. Then, talking to a Lebanese newspaper editor as a drone circled overhead, he heard a different story: Americans and Israelis, the editor said, are cowards to send machines to fight for them. Much of the ethical conversation around America's unmanned aerial vehicle strikes in Afghanistan and Pakistan has centered around unintended civilian casualties. This is certainly a worthy topic for conversation. But Mr Singer asked a different set of questions: how do drones change the nations that use them?"