TODAY: Congress pledges to investigate CIA’s assessment of Russian interference in U.S. presidential election; prospect of Rex Tillerson as Secretary of State praised by Kremlin; clash of ideas over Syria interventions; Russia pledges to assist Serbia militarily; Lavrov pours scorn on E.U. terminology for Crimea; Gorbachev suggests ‘new union’ could emerge; RBC media ordered to pay thousands, but not millions, in damages to Rosneft.