According to the French foreign minister "the world should prepare for war" with Iran. These words come at a time the Americans push for tougher UN security council sanctions against Iran. But permanent members Russia and China are still not very cooperative. Even non-permanent member Germany doesn't want to hurt it's exports to the Islamist terror state. The big words from permanent member France can be seen as a warning to these countries: either support the sanctions or (the Americans) set the world on fire.
But in reality, it's not so much the world who has to prepare for the war. Firs of all it's the French them selves. They have positioned their French soldiers between Israel and the Iran proxy fighters of Hezballa, but did nothing to stop their rearmament.