Well-wishers have gathered on Smathers Beach in Key West to witness the final leg of Diana Nyad's journey from Cuba to Florida without a shark cage.
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The Novichok incident in Salisbury has turned into an international diplomatic crisis. But how bad could things get? Adam Shaw reports.
Among those murdered was Keith Palmer, an unarmed constable who "did his job and never wanted any fuss."
Top temperature 14 Celsius (57 F).