A letter seized from an al-Qaida courier shows Osama bin Laden has made little headway in recruiting Iraqis for a holy war against America, raising questions about the Bush administration’s contention that Iraq is the central front in the war on terror. The 17-page letter, cited as a key piece of intelligence that offered a rare window into foreign terrorist operations in Iraq, appealed to al-Qaida leaders to help spark a civil war between Iraq’s two main Muslim sects in an effort to “tear the country apart,” U.S. officials said Monday. One senior U.S. officer, Brig. Gen. Mark Kimmitt, warned the plea could mean more “spectacular” attacks because the rebels were despairing that their devastating car bombs and the steady killing of U.S. troops were failing to shove the Americans from Iraq or spark massive discord. Full Story