Prime Minister David Cameron and Russian President Vladimir Putin watch the action during the women's judo semi-final in London. The pair met earlier today at Downing Street for talks on the Syrian crisis.
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The Prime Minister has praised the former soldier's "huge professionalism" in trying to save the life of Pc Keith Palmer.
The man who carried out the Westminster attack is thought to be British born and was once investigated by MI5, the Prime Minister has said.
Jason Day, who lost his father to stomach cancer at the age of 12, broke down in tears as he explained his shock exit during the WGC event.