The United States is moving closer to war with Iran by accusing the "highest levels" of the Iranian government of supplying sophisticated roadside bombs that have killed 170 US troops and wounded 620.
The allegations against Iran are similar in tone and credibility to those made four years ago by the US government about Iraq possessing weapons of mass destruction in order to justify the invasion of 2003.
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It is likely that Shia militias have received weapons and money from Iran and possible that the Sunni insurgents have received some aid. But most Iraqi men possess weapons. Many millions of them received military training under Saddam Hussein. His well-supplied arsenals were all looted after his fall. No specialist on Iraq believes that Iran has ever been a serious promoter of the Sunni insurgency.
The evidence against Iran is even more insubstantial than the faked or mistaken evidence for Iraqi WMDs disseminated by the US and Britain in 2002 and 2003. The allegations appear to be full of exaggerations. Few Abrams tanks have been destroyed. It implies the Shias have been at war with the US while in fact they are controlled by parties which make up the Iraqi government.
http://news.independent.co.uk/world/politics/article2261526.ece