Protesters in Hong Kong today called for greater democracy in elections for the city's leader, or chief executive, which is due to take place in three years' time.
Chinese authorities are keen to ensure that only pro-Beijing candidates make it on to the 2017 ballot.
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Prince William will visit the West Bank when he becomes the first member of the Royal Family to visit the Occupied Palestinian Territories.
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The statement comes after President Donald Trump cancelled his planned summit with Kim Jong Un.