French President Francois Hollande addresses the nation at the Elysee Palace in Paris January 9, 2015. French President Francois Hollande confirmed reports on Friday that four hostages were killed at a siege of a kosher supermarket in eastern Paris. At the same time heavily armed police ended a separate stand-off in northern France involving the two Islamist suspects behind the killings at Charlie Hebdo magazine this week. Hollande called for national unity and said the country should remain "implacable" in the face of racism and anti-Semitism. [Photo/Agencies]