By Alexander Tanas CHISINAU (Reuters) – Moldova’s top negotiator in resolving the three-decade-old dispute with its pro-Russian Transdniestria separatist enclave on Sunday ruled out any role for Russia in finding a solution as long as it was engaged in its war in Ukraine. Deputy Prime Minister Oleg Serebrian made his comments on national radio as Moldova’s pro-European government pressed ahead with its drive to secure European Union membership. The country’s prime minister on Saturday said the newly appointed minister for European Affairs would head Moldova’s team at membership talks, which we…