Keith Kellogg said he considered the Russian side's concerns about NATO's eastward expansion to be justifiedNEW YORK, May 30. /TASS/. NATO may stop accepting new Eastern European countries into its ranks, as the US understands that this is a matter of national security for Russia, US special envoy for Ukraine Keith Kellogg told ABC News in an interview. "That's one of the issues that Russia [will] bring up. They [the Russians] are not just talking Ukraine, they're talking the country of Georgia, they're talking Moldova. We've said that to us, Ukraine coming into NATO is not on the table, and...