Many think-tanks, especially those on the left, have taken journalists as fellows. It is a strategy that works to promote and publicize products when the journalists fail to disclose their financial ties to the organization. Case in point: the Politico’s David S. Cloud, who for a year, was a “writer in residence” at the Center for a New American Securirty (CNAS). In fully a quarter of all his subsequent stories, he cites CNAS reports — without acknowledging his links to the organization. A few samples: