A Canadian judge ruled this week that Omar Khadr poses no public safety threat. Tell that to the children of Sergeant First Class Christopher J. Speer and the surviving American soldiers who valiantly fought Khadr on the battlefield. In 2012, Khadr pleaded guilty, guilty, guilty, guilty and guilty to five charges related to the killing of Speer, a 28-year-old medic with the U.S. Special Forces. This young American hero died in Afghanistan in 2002 during an ambush by al-Qaida operatives. Just days before he gave his life, Speer had fearlessly walked onto a minefield to rescue two wounded Afghan children....