When the Treaty of Lisbon went into effect in December 2009, the event seemed to mark the beginning of a longer phase of institutional consolidation for the EU. Since 2010, however, the EU has faced multiple crises, which have rocked its foundations and deeply challenged the narrative of 'the end of the history of integration'. The military crisis in eastern Ukraine and the refugee crisis call for a joint approach, but in practice reveal the difficulty of maintaining even the appearance of Eu...