Azerbaijan’s efforts to open a freight rail connection to Europe via Turkey have focused on two proposed routes transiting the Nakhchivan exclave. But there is a third alternative via Georgia that is getting an upgrade. Improvements to a 114-mile stretch of the Baku-Tbilisi-Kars railway will likely be finished by April, Rovshan Rustamov, the chair of Azerbaijan Railways, recently announced. “I am thrilled to share that our modernization project is over 95 percent complete, setting a new benchmark for cargo transportation between Asia and Europe,” he wrote on his LinkedIn page. The modernizatio…