By Dmitry Antonov and Sabine Siebold MOSCOW/BRUSSELS (Reuters) – NATO said on Monday it was putting forces on standby and reinforcing eastern Europe with more ships and fighter jets, in what Russia denounced as an escalation of tensions over Ukraine. The move added to a flurry of signals that the West is bracing for an aggressive Russian move against Ukraine. The Kremlin, in response, accused the West of “hysteria”. “NATO will continue to take all necessary measures to protect and defend all allies, including by reinforcing the eastern part of the alliance,” NATO Secretary-General Jens Stolten…