by Mike Krumboltz There's no doubt that Winston Churchill had his share of secrets. When you're leading a world power during wartime, classified information come with the territory. But did one of his closely held secrets have to do with "little green men"? A new report contends that the English Bulldog may have played a part in a UFO cover-up. It's a conspiracy theory worthy of the " X-Files ," and it goes like this: Churchill, then the prime minister,