The movements of a suspected senior al-Qaida operative through Iraq are a key component of the Bush administration’s suggestions that Saddam Hussein and the terror network may have some links, U.S. officials say. Abu Musab Zarqawi, a Jordanian who is considered one of the top al-Qaida lieutenants still at large, passed through Baghdad last summer for medical treatment. He also has been tied recently to Ansar al-Islam, a Kurdish Islamic extremist group in northern Iraq, said the officials, speaking this week on condition of anonymity. He may be in northern Iraq — in a region outside Saddam’s control — but officials said they aren’t certain of his whereabouts. Full Story