French President Francois Hollande said the near-simultaneous attacks that left at least 127 dead an "act of war" organized abroad by the Islamic State and vowed to wage a "merciless" fight against the militant organization.
Hollande put France's security at its highest level Saturday morning with the military continuing to patrol France's streets to give residents a sense of security. Parisians were encouraged to stay home. Hollande declared a three-day period of national mourning.
