Seven things President Trump could learn from the Queen

Donald Trump is meeting Queen Elizabeth II at Windsor Castle, during his first visit to the UK, as US president. It could be an awkward moment for both parties -- and not just because of his past comments or the vocal protests during his visit. When it comes to diplomacy, Mr Trump might need to take a leaf out of the Queen's book. We've got seven suggestions for the US president -- and anyone else in the world of diplomacy.

(Photo: Queen Elizabeth II graphic. Credit: BBC.)