By Tom Balmforth and Max Hunder KYIV (Reuters) -Russia on Thursday withdrew from Snake Island, a craggy speck of land in the Black Sea, handing Ukraine a symbolically-potent political victory and depriving Moscow of a strategic outpost for its air defences and electronic warfare systems. The island’s capture by Russian forces on the first day of their invasion entered Ukrainian folklore as a tale of bold resistance after Kyiv said that one of its border guards had told a Russian warship demanding their surrender to “fuck off”. Lifting the spirit of Kyiv residents worn down by Russia’s grinding…