Jean-Claude Juncker can sometimes be very daring. But words count, and should be used with precision. Speaking to a German newspaper, the President of the European Commission has called for a ‘European army’ to help cope with the challenge posed by Russia, to defend European ‘values’ and for the EU to take up its ‘responsibility in the world’ and be able ‘to react to a threat to peace in a Member State or neighbour’. He even said that ‘it would have been useful during the crisis in Ukraine’. But how?