It is significant Washington is being blamed and not the administration of Prime Minister Nuri al-Maliki in Baghdad as Tehran is using this to inspire more hatred (attacks) against the foreign led occupation. It is also significant this took place in the religious center of Najaf which will inspire even more hatred. This comes right after Thursday's statement by the Sadr movement saying they were "under siege" and warned they will end the ceasefire they imposed last August. Tehran is setting the stage for more attacks against the remaining British-U. S. troops in the country, an offensive Iran will be entering at least by launching missiles from Iran at UK/US bases.