Unmanned drones have been used to kill thousands of suspected militants — and civilians — and not just in open war zones like Afganistan, Libya and Iraq. Drone strikes have also been used in covert wars in Pakistan, Yemen and Somalia. The graphs below show drone related deaths in these secret wars. Using statistics gathered by reporters at the U.K.-based Bureau of Investigative Journalism, these interactive charts reveal more about these victims and where they lived. You can filter the data on drone-related deaths by using the “select” boxes on the left of each chart.