( CNN) A Renault with Belgian plates and a cell phone containing a chilling message were among the focuses Tuesday in the sweeping multinational investigation into last week’s terror attacks in Paris that killed 129 people.

French President Francois Hollande says his country “is at war”after three squads of gun-wielding ISIS suicide bombers hit six busy locatings. His military backed up the statement by pounding ISIS targets in Syria with airstrikes. Russia launched airstrikes and cruise missile there.

Meanwhile, a glimmer of hope for Syria’s civil war, as America’s top envoy says a ceasefire could be on the horizon.

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