French soldiers patrol in front of the Eiffel Tower on January 8, 2015 in Paris as the capital was placed under the highest alert status a day after heavily armed gunmen shouting Islamist slogans stormed French satirical newspaper Charlie Hebdo and shot dead at least 12 people in the deadliest attack in France in four decades. A huge manhunt for two brothers suspected of massacring 12 people in an Islamist attack at a satirical French weekly zeroed in on a northern town Thursday after the discovery of one of the getaway cars. As thousands of police tightened their net, the country marked a rare national day of mourning for Wednesday's bloodbath at Charlie Hebdo magazine in Paris, the worst terrorist attack in France for half a century. AFP PHOTO / BERTRAND GUAY (Photo credit should read BERTRAND GUAY/AFP/Getty Images)
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Extreme authority: France's 'state of emergency'
After the deadly attack in Nice, the French government is flexing its authority by extending a state of emergency. CNN's Will Ripley explains what that means.
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Truck hits crowd in Nice, France 19 videos
French soldiers patrol in front of the Eiffel Tower on January 8, 2015 in Paris as the capital was placed under the highest alert status a day after heavily armed gunmen shouting Islamist slogans stormed French satirical newspaper Charlie Hebdo and shot dead at least 12 people in the deadliest attack in France in four decades. A huge manhunt for two brothers suspected of massacring 12 people in an Islamist attack at a satirical French weekly zeroed in on a northern town Thursday after the discovery of one of the getaway cars. As thousands of police tightened their net, the country marked a rare national day of mourning for Wednesday's bloodbath at Charlie Hebdo magazine in Paris, the worst terrorist attack in France for half a century. AFP PHOTO / BERTRAND GUAY (Photo credit should read BERTRAND GUAY/AFP/Getty Images)
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Policemen walk on the site where a truck drove into a crowd watching a fireworks display on the Promenade des Anglais seafront in the French Riviera town of Nice on July 15, 2016. An attack in Nice where a man rammed a truck into a crowd of people left 84 dead and another 18 in a "critical condition", interior ministry spokesman Pierre-Henry Brandet said Friday. An unidentified gunman barrelled the truck two kilometres (1.3 miles) through a crowd that had been enjoying a fireworks display for France's national day before being shot dead by police. / AFP / Valery HACHE (Photo credit should read VALERY HACHE/AFP/Getty Images)
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Fire department ambulances and vehicles are parked near the scene of an attack after a truck drove on to the sidewalk and plowed through a crowd of revelers who'd gathered to watch the fireworks in the French resort city of Nice, southern France, Friday, July 15, 2016. A spokesman for France's Interior Ministry says there are likely to be "several dozen dead" after a truck drove into a crowd of revelers celebrating Bastille Day in the French city of Nice. (AP Photo/Christian Alminana)
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Police officers, firefighters and rescue workers are seen at the site of an attack on July 15, 2016, after a truck drove into a crowd watching a fireworks display in the French Riviera town of Nice. A truck ploughed into a crowd in the French resort of Nice on July 14, leaving at least 60 dead and scores injured in an "attack" after a Bastille Day fireworks display, prosecutors said on July 15. / AFP / Valery HACHE (Photo credit should read VALERY HACHE/AFP/Getty Images)
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