Russia risks causing an "environmental disaster" in eastern Ukraine with its support for rebel forces, President Petro Poroshenko told a UN climate conference in Paris on Nov. 30.
May 25, 2014 Presidential Election
Agence France-Presse: Poroshenko says Russia causing ‘environmental disaster’ in Ukraine

Ukrainian President Petro Poroshenko delivers a speech at the COP 21 United Nations conference on climate change, on Nov. 30, 2015 at Le Bourget, on the outskirts of the French capital Paris.