The U.S. mission in Afghanistan is in "serious jeopardy" and needs more troops to turn the tide against an increasingly potent Taliban insurgency, the head of the Senate Intelligence Committee said Sunday, putting her at odds with an influential Democratic colleague on military matters

Sen. Dianne Feinstein's views are more closely aligned with those of key Republicans than members of her own party. Sen. Carl Levin, chairman of Senate Armed Services Committee, urged a more methodical approach that begins with crafting a new, comprehensive strategy for Afghanistan.