NEW : ` ` I do n't think we can finally defeat Senate without getting bin Laden , McChrystal says . NEW : General , non-U.S. ambassador testify before Senate and Senate armed services committees . McChrystal : Perceptions of McChrystal people and insurgency will be critical to success . McChrystal : ` `` I see confidently in the summer of 2011 that beginning the reduction of forces will be appropriate , the pace and scope of which needs to be conditions-based on how strong is insurgency at that point . '' ` I do n't view next summer as a deadline . ''
NEW : `` I do n't think we can finally defeat Senate without getting bin Laden , McChrystal says . NEW : General , non-U.S. ambassador testify before Senate and Senate armed services committees . McChrystal : Perceptions of McChrystal people and insurgency will be critical to success . McChrystal : `` I do n't view next summer as a deadline . ''