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Haskins, who played school principal Richard Belding in the hit series, has been described as 'a loyal friend' and a 'great person'.

The two leaders have made a show of working to preserve harmony between the world's two largest economies, though there were no major breakthroughs.

Trump has done his best to impress Xi during the his three-day visit to Washington - but what was really going on behind the pomp and pageantry?