Princess Catherine, Duchess of Cambridge (L) looks up as Britain's Prince William, Duke of Cambridge writes in the book of condolences at the French embassy in London following last week's attacks in Paris on November 17, 2015. French police launched dozens of fresh raids across the country today as warplanes strafed the Syrian stronghold of Islamic State jihadists which France has vowed to destroy after their attack on Paris.
 AFP PHOTO / NIKLAS HALLE'N        (Photo credit should read NIKLAS HALLE'N/AFP/Getty Images)