RT News - September 29, 2016 (12:00 MSK)

Washington presents Russia with an ultimatum and threatens to halt co-operation on Syria, as violence escalates in Aleppo. A major upset for Barack Obama, as the U.S. Senate overwhelmingly votes to nullify his veto of a bill to allow Americans to sue Saudi Arabia over its alleged involvement in the 9/11 attacks. A boost for the depressed oil market. Prices rise after OPEC finally agrees to cut production for the first time in eight years.