Former French President Nicolas Sarkozy (L) and former French President Francois Hollande (Rear C-L) leave after a national ceremony for late Lieutenant-Colonel Arnaud Beltrame at the Hotel des Invalides in Paris, France, March 28, 2018. Beltrame was killed by an Islamist militant after taking the place of a female hostage during a supermarket siege in Trebes. Ludovic Marin/Pool via Reuters