Sergey Ryabkov specified that it is even more premature to speak of any specific dates for the summit MOSCOW, May 22. /TASS/. Moscow and Washington must make painstaking efforts in preparing the potential Putin-Trump meeting, because the stakes here are as high as it gets, and any missteps would be catastrophic, Russian Deputy Foreign Minister Sergey Ryabkov told TASS, replying to a question about whether the Vatican could serve as a meeting place for the Russian and US leaders. "As of now, all