Prime Minister Manuel Valls, center, dries his tears, next to French President Francois Hollande, left, and Paris Mayor Anne Hidalgo during a ceremony to pay tribute to the three police officers killed in the attacks, in Paris, France, Tuesday, Jan. 13, 2015. Police officers Ahmed Merabet, 40, Franck Brinsolaro, 49, were killed during the attacks at Charlie Hebdo, and Clarissa Jean-Philippe killed in Montrouge last week. (AP Photo/Francois Mori, pool), APTOPIX