The confrontation between West and Russia on the settlement of conflicts in Abkhazia, South Ossetia, Nagorno-Karabakh and Transnistria is not at all predetermined. Many observers believe it is too much to expect that the Russians would actively cooperate in forcing out the Tiraspol kleptocrats, the great majority of whom are Russian citizens. Yet, Moscow might be willing to reconsider its position. A credible, short-term timetable for withdrawal of Russian troops and ammunitions would clearly signal the end of Russian support for Tiraspol and make the kleptocrats amenable to a departure deal. It is possible that some kind of safe haven outside Moldova (presumably in Russia) might, for them, constitute an attractive offer. Some appropriate formula could be identified, of course, if Russia will only realize that it gains much more from cooperating with the U.S. and EU on this issue than by continuing to play the separatist card by maintaining its military presence and support of corrupted leaders of these rebel regions.
Political Economy of "Frozen Conflicts" in ex-soviet States: Challenger and prospects for the U.S. and Russia, here