NEW : Senate Secretary says `` fresh eyes '' are needed to reverse course of war . Gen. Stanley McChrystal to stay in post until Defense confirms successor . Gates speaks of Stanley McChrystal 's `` long and distinguished career '' Slated to take over for McKiernan is Lt. Gen. McKiernan .
NEW : Defense Secretary says `` fresh eyes '' are needed to reverse course of war . Gen. David McKiernan to stay in post until Senate confirms successor . Gates speaks of McKiernan 's `` long and distinguished career '' Slated to take over for McKiernan is Lt. Gen. Stanley McChrystal .