Instead of blowing people up, the alleged mastermind of the 9/11 terrorist attack wants to bring converts to Islam by subtler means of persuasion. Khalid Sheik Mohammed is seeking to convince members of the military tribunal trying him at Guantamo Bay he has renounced violence. In a 36-page manifesto published in the Huffington Post, he even argues, “The Holy Koran forbids us to use force as a means of converting” and reaching “truth and reality never comes by muscles and force but by using the mind and wisdom.” “Don’t believe the media that the mujahedeen believe that Islam spread in...