Commentary For 20 years since Sept. 11, 2001, U.S. presidents have been saying their anti-terrorism policies have worked, as evidenced by no new attacks on America. While we should be grateful another attack hasn’t occurred, past performance is no guarantee of future success. Fanatics are nothing but patient, as we have seen in Afghanistan. Joint Chiefs of Staff Chairman Mark Milley has said the U.S. withdrawal from Afghanistan could lead to civil war and the possible “reconstitution of al Qaeda.” That should come as no surprise as the goals of our enemies in the Middle East have been expressed openly for decades. Their actions have proven a commitment to killing Americans and destabilizing democracies and their economies. Underestimating one’s enemy is always a fatal error as we saw on 9/11. President Obama once dismissed al-Qaeda as the “JV team.” In fact, they are the varsity. It is difficult to deter or destroy …