REUTERS

"This summer, the situation has become much worse. The risks of escalation are high," Hollande told an annual gathering of French ambassadors, as reported by Reuters.

Read alsoFrench President congratulates Ukraine on Independence Day, calling it 'key actor' on global sceneHollande said he and German Chancellor Angela Merkel had had contact throughout August with Russian President Vladimir Putin and his Ukrainian counterpart Petro Poroshenko.