Netherlands' Prime Minister Mark Rutte arrives at an European Union summit in Brussels December 8, 2011. European Union leaders will discuss proposals for tighter euro zone integration on December 8-9, with the aim of bringing deficits and debt much more strictly into check, a move that may give the European Central Bank room to step up purchases of sovereign bonds and reassure financial markets. REUTERS/Francois Lenoir (BELGIUM - Tags: POLITICS BUSINESS)