France's Macron holds security meeting amid heightened alert after deadly school stabbing

French President Emmanuel Macron held a special security meeting amid heightened terror threats following the fatal stabbing of a teacher last week. A high school in Arras was evacuated due to a bomb threat, which turned out to be false. The Louvre Museum and Versailles Palace in Paris also received bomb threats and were evacuated. Macron cut short his travel plans to attend the security meeting.