Three people were stabbed to death in Nice in what France says was an "Islamist terrorist attack".
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Jams stretched more than 430 miles (700km) in total just hours before new measures came into force.
Hand sanitiser, wipes and soaps are among the products deemed "not fully safe".
Travellers from Cyprus and Lithuania must self-isolate for 14 days as of Sunday, Grant Shapps says.
A cross-party group starts legal action, claiming ministers failed to protect UK democracy.
A boy, 15, was also injured when the rope holding their parachute snapped, the Greek coastguard says.
Relatives are "desperate" for news of the youngest child, a baby, after a boat bound for the UK sank.
Financial markets in the US and Europe fall as concerns rise about the coronavirus impact on economic growth.
Paris Charles de Gaulle is now busier as passenger numbers at Heathrow dive 84% because of Covid.
Two children - aged five and eight - and a man and a woman have died off the coast of France.