KYIV (Reuters) – The Ukrainian flag has been delivered by helicopter to Snake Island in the Black Sea after Russian forces withdrew from the strategic outpost last week, and it will be raised as soon as Ukrainian troops arrive, Ukraine’s military said on Monday. Natalia Humeniuk, spokeswoman for Ukraine’s southern military command, had initially said the flag had been raised on the craggy outcropping in the Black Sea. “The flag has been delivered to the island by helicopter,” Ukrainian media quoted Humeniuk as telling CNN television. “It will await the arrival of troops and will then be hoiste…