By Richard Ashmore North Korea’s leader, Kim Jong Un, has issued a stark warning to his enemies as he displays his skill by driving what is claimed to be ‘the world’s strongest tank’. With his head peeking up from an open driver’s seat, the leader steered the heavy-duty machine around a track, watched by his adoring soldiers and officers. After completing his stint at the wheel, Kim climbed down to pose for a photograph with his comrades next to a flag bearing a communist emblem. For the display, Kim switched his usual Chairman Mao-inspired suit for a more relaxed outfit, a leather jacket, and…