With Iran testing new missile systems and showing no signs of backing off its nuclear weapon program, the prospect of economic sanctions increases. But some actions are already being taken. Over the weekend the Wall Street Journal reported that the Treasury Department has frozen more than $2 billion allegedly held on behalf of Iran in Citigroup accounts in the United States. This seizure, although executed in secret over a year ago, comes on the heels of the recent Alavi Foundation seizures. Together, these actions show a renewed effort on the part of the U.S. government to cut off financial support and resources to the Iranian regime.