Prince Harry has been blasted by a friend of the King for using his children as “emotional blackmail”. The King is understood to have last seen Prince Archie, five, and Princess Lilibet, three, in June 2022, when the Duke and Duchess of Sussex travelled to the UK with their children for the late Queen’s Platinum Jubilee celebrations over two years ago. Now, the chance to see his grandchildren in the near future appears to be fading, as Harry stated last week that it would be “dangerous” to bring his wife and children back to the UK. In a new documentary, Tabloids on Trial, the Duke said: “It’s…