The US Treasury Department's "Office of Foreign Asset Control" has targeted two Bitcoin addresses as a part of of their efforts to sanction Iran (archived). This incident highlights the abject incompatibility of the criminal organization calling itself the United States Government and the honest Bitcoin network. The criminal organzation, which is absurdly claiming it can have an office for the purpose of controlling foreign assets in foreign lands, is trying to say our Bitcoin network far above their criminal reach must change its rules on their say so just the same as any other bum asks your favor with nothing to offer but more asks.
Update: Transactions were sent to the "sanctioned" addresses despite impotent proclamations.