(Reuters) – Moscow residents appeared anxious but resilient as the country prepared on Sunday for its annual commemoration of the Soviet victory over Nazi Germany with an economy reeling from the West’s most stringent economic sanctions in modern times. As Russia’s military operation in Ukraine grinds towards the end of its third month, President Vladimir Putin will underscore the enormous sacrifices made by the Soviet Union to defeat Adolf Hitler in World War Two in a Victory Day speech in Red Square on Monday. The sanctions imposed by Western nations since Putin launched the invasion of Ukra…