In times of conflict, America tends to focus on personalities over ideas or movements, trying to play the man, not the board — as if capturing or killing Osama bin Laden, for example, would instantly end the present conflict. But such thinking loses sight of the fact that ideas have consequences. If one believes that God commands something, this belief is not likely to dissipate just because the person who elucidated it has been silenced. Islam, as a faith, is as essential a feature of the terrorist threat today as it was of the Barbary piracy over two centuries ago.