Russian President Vladimir Putin appealed to Western leaders to bury their differences with Russia and jointly strike at the "barbarian" Islamic State (ISIS) militants in Syria, saying Friday's Paris terrorist attack underscored the need for such concerted action. In a condolences telegram sent to French President Francois Hollande, Putin said, "This tragedy is another proof of the barbarian nature of terrorism, which challenges the human civilisation. Clearly, for effective fighting this evil, the entire international community should unite efforts," Tass news agency reported. "I would like to confirm the Russian side is ready for most close cooperation with the French...