NEW : Mubarak must stay in office , Obama envoy says . Comment: `` Leaders in the region may be able to hold back the tide for a little while , but not for long , '' she said . Issues like terrorism and the START treaty are being addressed . START takes effect after Clinton , Lavrov exchange instruments of ratification .
NEW : Mubarak must stay in office , Obama envoy says . Comment: Issues like terrorism and the START treaty are being addressed . START takes effect after Clinton , Lavrov exchange instruments of ratification .