Agreement after 25 years of negotiations prompts farmers to block roads in Paris, Brussels and Warsaw

European Union member states have backed the biggest ever free trade agreement with a group of Latin American countries, ending 25 years of negotiations but stoking further tensions with farmers and environmentalists around the bloc.

The contentious Mercosur deal with Argentina, Brazil, Paraguay and Uruguay prompted immediate protests in Poland, France, Greece and Belgium, with farmers blocking key roads in Paris, Brussels and Warsaw.