Even the Bush administration will now admit, under its collective breath of course, that Iraq is in the throes of a full-blown civil war between armed groups of its Sunni and Shia Arab communities, triggered a year ago by the destruction of the al-Laskar mosque in Samara, a revered Shia shrine. (...) What the American authorities are reluctant to admit, however, is that there are signs that the Sunnis of Saudi Arabia and their allies - including Jordan - have been equipping and training Sunni extremists in Iraq for some time now. Critically, not all the weaponry and munitions have been used against the militants' Shia and Kurdish Iraqi enemies. Some of them - including lethal roadside bombs - have been aimed at US forces. "The growth of the official and unofficial Saudi and Jordanian support for the militants is one of the most worrying developments," a senior British officer has told me privately after a visit to Iraq."