WHEN the Russians start complaining about the weather, you know you're in trouble. For several days now, nighttime temperatures in Moscow have plummeted below minus 30oC and, by the time you read this, the Russian capital will be gripped by its lowest-ever figure, minus 41¡C. The average Brit will never feel cold like this. And let me tell you, you don't want to. First, your nostrils freeze, causing your nose to itch uncontrollably and making every breath painful. Then frost attaches itself to your eyelashes, which freeze into an icy lump that scratches your eyeball each time you blink. Any...