The single greatest national security question currently facing the U.S. National Command Authority is how best to counter violent extremism. The National Command Authority has four broad strategies through which it may employ military forces to counter violent extremism: counterinsurgency, counterterrorism, support to insurgency, and antiterrorism. The Long War is anticipated to continue for decades, perhaps generations. Thus, it is imperative to select the best strategy or strategies for employing military forces. Based on historical lessons in combating terrorism, the best strategy is...