"We have agree to strengthen our exchange of military information, both on the strikes and the location of the different groups (in Syria)," French Defence Minister Jean-Yves Le Drian said following talks with Russian counterpart Sergei Shoigu.
"Our intelligence services will strengthen their already existing ties, which require increased cooperation."
Le Drian said they had identified a method to assess the state of IS and other "terrorist groups" following air strikes conducted both by the Russian and French air forces.
The two sides also agreed to share intelligence on foreign fighters having joined the ranks of jihadist groups in Iraq and Syria, a figure that has more than doubled since last year to at least 27,000, according to a recent report by an intelligence consultancy.
Russia's federal security service said last week that nearly 2,900 Russians are fighting or have fought with the IS group in Iraq and Syria.
Western nations have complained that Russia is primarily bombing Syrian rebels, including moderates, opposed to the regime of President Bashar al-Assad, rather than targeting IS jihadists.
The defence ministers' talks follow a visit to Moscow last month by French President Francois Hollande, when he sought support from Russian leader Vladimir Putin for increased action against IS in the wake of terrorist attacks in Paris.
The two leaders agreed to "intensify" and "coordinate" attacks, mainly by targeting the transportation of the oil products which finance the group and through the exchange of intelligence.
Monday's talks were only the second bilateral meeting between Le Drian and Shoigu, as relations between the two ministers were suspended for two years after Russia's annexation of Crimea from Ukraine in 2014.
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