After interception of a coach carrying Russian football fans suspected of hooliganism, Moscow warns Paris against a 'significant aggravation' in bilateral relations.
After Moscow meeting, President Hollande said he and Vladimir Putin agreed to 'increase information and intelligence exchange, intensify airstrikes'.
The surprise peace initiative was announced by President Hollande as he held a key-note press conference in Paris.
Hollande, who was in Moscow on way back from trip to Kazakhstan, is most senior Western leader to visit Russia since it annexed Crimea.
The boss of French oil and gas giant Total, 63, and the three crew of his Falcon 50 executive jet died after it hit a snow plough on takeoff.
In visit to Moscow, Marine Le Pen says it is the European Union that declared 'cold war' on Russia by seeking closer ties with Ukraine.