Vladimir Putin's enemies are keeping a close eye on a bird in pointe shoes, because a broadcast of "Swan Lake" may reveal his demise. -snip- First, a bit of history about why so many historians and Eastern Europeans took to Twitter to pray for Swan Lake's swift appearance. To see dancing swans is, to use @asiktspolitruk's words, "the equivalent of white smoke from the Sistine Chapel's chimney in Rome announcing a new Pope." The broadcast would indicate that the end of Vladimir Putin was near. When Leonid Brezhnev died in 1982, state-run television broadcast a full-length Swan Lake in lieu...