MOSCOW, May 7. /TASS Correspondent Dmitry Osipov/. In the most dramatic years of World War II arose the issue of delivering aircraft supplied by the Allies. The Alaska -Siberia air route, connecting the US and the USSR, started operating in 1943. Flight safety in most difficult weather conditions was vital. Here is a story about the input meteorologists made in the Great Victory. The route of courage Dozens new weather stations appeared amid the tundra and taiga. Hundreds of specialists and