When citizens in both France and the Netherlands voted 'No' to the Constitution in referendums in 2005, EU leaders declared a "period of reflection". The Kyoto Protocol, an international treaty to limit global warming and cut emissions of greenhouse gases, comes into force.
Entrada en vigor en febrero de 2005 del Protocolo de Kyoto, tratado internacional destinado a limitar el recalentamiento del planeta y reducir las emisiones de gas de efecto invernadero.