A man holds his head in his hands as he lays flowers in front of the Carillon cafe, in Paris, Saturday, Nov.14, 2015. French President Francois Hollande vowed to attack Islamic State without mercy as the jihadist group admitted responsibility Saturday for orchestrating the deadliest attacks inflicted on France since World War II. (AP Photo/Thibault Camus)

France vows ‘merciless’ war on IS for Paris attacks that kill 127

French President Francois Hollande called the carnage “an act of war that was prepared, organized, planned from abroad with internal help.”

A man is being evacuated from the Bataclan theater after a shooting in Paris, Friday Nov. 13, 2015.  French President Francois Hollande declared a state of emergency and announced that he was closing the country's borders. (AP Photo/Thibault Camus)

Official: As many as 120 dead in string of Paris attacks

French police say they believe all of the attackers involved shootings and bombings in Paris are dead.