Fareed Zakaria pleads:

On Sunday morning in Tehran, Newsweek's Maziar Bahari was detained without charge by Iranian authorities and has not been heard from since. Mr. Bahari is a Canadian citizen and a renowned journalist and filmmaker, who has been living in and covering Iran for the past decade. Newsweek strongly condemns this unwarranted detention, and calls upon the Iranian government to release him immediately.

Tehran Bureau has a list of other politicians and journalists who have been arrested. Reporters Without Boarders says at least 20 reporters have been arrested since June 13th.