"The US began carrying out drone strikes in 2001, after 9/11, under the administration of then president George W. Bush. Since then, the US has conducted 910 strikes in four countries ─ Afghanistan, Pakistan, Yemen and Somalia. Pakistan is at the top of this list, with 424 drone attacks since 2004. Over 2,500 people have been killed in US drone strikes, of which at least 350 were civilians."