The traditional New Year's Eve celebrations on the Champs-Elysees will be the first large assembly to be sanctioned in Paris since France's state of emergency started in November. Each year, hundreds of thousands of people gather on Paris's Champs-Elysees to celebrate the "Reveillon," as the French call December 31. But after a year that started with the Charlie Hebdo attacks and ended with the November 13 shooting and bomb attacks that killed 130 people, it was unclear whether New Year celebrations in Paris would go ahead as usual. France has been under a state of emergency since November 13, and...