This is positive

According to reports this morning Moqtada al Sadr has left Baghdad for Iran. Not great for al Sadr's credibility--though there's nothing saying the departure is permanent. I don't imagine the Iranians are too pleased, however. For the last week the US has been trying to pin on Iran support of arms and men for the Iraqi insurgency--a charge which Iran has vigorouosly denied. But it's a little hard to maintain that suspension of disbelief when one of the top insurgent leaders pitches his tetnt in Tehran and announces he will henceforth general his army by phone from there, as well as in light of other evidence, for example the capture of .50 calibre sniping rifles sold to Iran a year ago in Iraq. On a related note, the BBC says this morning that 11 Iranian Revolutionary Guards have been killed in southern Iran by a roadside bomb. According to the report,

Iranian officials have accused Britain and the United States of supporting ethnic minority rebels operating in the Islamic republic's sensitive border areas.

If this charge is true, good; if it is not true, why aren't they?