Angela Merkel warned ahead of the EU summit that Europe's destiny was at stake with a battle over borders becoming a battle of values. To reach a deal, European leaders pulled another one of those trademark all-nighters, with a compromise where EU leaders agreed to share out refugees on a voluntary basis and create so-called "controlled centres" inside the European Union to process asylum requests. Will it be enough to stop the slanging between France's president and Italy's interior minister?