North Korea's latest submersible attack craft was previewed by Russia's President Putin today to great acclaim.The craft, capable of travelling over 8,000 kms under its own power, is described as a "safeguard" in case America decides to try and attack North Korea for a third time.North Korea's Dear Leader, Kim Jong Un commented that it was terrific to have President Putin as a guest passenger and would "love to send him to America in it, surfacing off Texas, just to see their faces".President Putin reportedly politely refused the kind offer.President Putin has developed something of a hands-on reputation, having in the past flown a fighter jet, saved the lives of a film crew by shooting an oncoming Siberian tiger with a tranquilliser rifle, examined live polar bears and made a trip to the bottom of Lake Baikal, the world's deepest lake.