There is a wide gap between U.S. assessments of such casualties, and non-governmental reports. Nevertheless, it is a hard fact that U.S. strikes have resulted in civilian casualties, a risk that exists in all wars. For the families of those civilians, no words or legal construct can justify their loss. For me, and those in my chain of command, these deaths will haunt us as long as we live, just as we are haunted by the civilian casualties that have occurred through conventional fighting in Afghanistan and Iraq.
But as Commander-in-Chief, I must weigh these heartbreaking tragedies against the alternatives. To do nothing in the face of terrorist networks would invite far more civilian casualties – not just in our cities at home and facilities abroad, but also in the very places –like Sana'a and Kabul and Mogadishu – where terrorists seek a foothold. Let us remember that the terrorists we are after target civilians, and the death toll from their acts of terrorism against Muslims dwarfs any estimate of civilian casualties from drone strikes.