Eaelier, the two countries’ delegations arrived at the venue of talks ISTANBUL, July 23. /TASS/. The heads of the Russian and Ukrainian delegations, Vladimir Medinsky and Rustem Umerov, are holding a one-on-one meeting at the Ciragan Palace in Istanbul, a source told TASS. "The heads of the Russian and Ukrainian delegations are holding a bilateral meeting at the Ciragan Palace. It’s a one-on-one meeting," the source said. A TASS source said earlier that the two countries’ delegations had