Hats off to Tel Aviv University and the Technical University of Berlin, which recently presented a vital counterterrorist study to NATO leaders. It shows that organizations enabling worldwide terrorism, namely, al-Qaeda, Hezbollah, and the Islamic Jihad, have websites hosted by America’s top Internet-service providers. These sites provide tutorials on bomb building and draw vulnerable U.S. and UK Muslims into a life of terrorism. Why should we share digital space and service with terrorists?