European Commission President Jean-Claude Juncker has urged the UK not to leave the EU, as it could provoke a new wave of crisis in the world and European economy - BBC Ukraine}

European Commission President Jean-Claude Juncker has urged the UK not to leave the EU, as it could provoke a new wave of crisis in the world and European economy - BBC Ukraine

European Commission President Jean-Claude Juncker has urged the UK not to leave the EU, as it could provoke a new wave of crisis in the world and European economy - BBC Ukraine