MOSCOW. Feb 5 (Interfax) - Russian Deputy Foreign Minister Sergei Ryabkov met with U.S. Ambassador to Russia Michael McFaul on Tuesday to discuss interaction in ensuring the U.S. official delegation's participation in the opening ceremony of the Winter Olympics in Sochi, a schedule of contacts at various levels in the upcoming period, problems of chemical disarmament in Syria, and some aspects of Russia's G8 presidency and also touched upon a number of relevant matters on the bilateral agenda, the Russian Foreign Ministry said in a statement.