Conservatives, the backbone of Bush's political base, are increasingly uneasy about the Iraq conflict and the steady drumbeat of violence in postwar Iraq, Halper and some of his fellow Republicans say. The conservatives' anxiety was fueled by the Abu Ghraib prisoner-abuse scandal and has not abated with the transfer of political power to the interim Iraqi government. Some Republicans fear angry conservatives will stay home in November, undercutting Bush's re-election bid. "I don't think there's any question that there is growing restiveness in the Republican base about this war," said Halper, the co-author of a new book, "America Alone: The...