Russian President Vladimir Putin slammed the West on Wednesday for failing to respond to his demand for security guarantees, which he called “non-negotiable” amid a growing diplomatic and military stand-off over Ukraine. “Our country is always open for direct and open dialogue, for the quest for diplomatic solutions to difficult problems,” he said in a video message released to mark Defence of the Fatherland Day, a day set aside to honour the armed services. “But I repeat: The interests of Russia and the security of our citizens are non-negotiable for us,” he said. The West has been scrambling…