‘God Save the Queen’ trended on Ukrainian social media over the weekend. ‘As a Brit in Kiev I have never felt so popular,’ one expat tweeted. Four hundred miles to the south, however, on the once grand, now shabby streets of Odessa, the enthusiasms of the Twittersphere seem remote. There is little optimism that Britain, or indeed any other western country, can do much to halt the tidal wave that locals fear Russia is about to release on them.