French soldiers enforcing the Vigipirate plan, France's national security alert system, patrol in front of The Arc de Triomphe (Arch of Triumph) on November 16, 2015 in Paris, three days after a series of deadly coordinated attacks claimed by Islamic State jihadists, which killed at least 129 people and left more than 350 injured on November 13. AFP PHOTO/JOEL SAGET (Photo credit should read JOEL SAGET/AFP via Getty Images)
