(L-R) Britain's Prime Minister Gordon Brown, EU Commissioner for Institutional Relations Margot Wallstrom and Austrian Chancellor Alfred Gusenbauer pose during a meeting of the European Socialist Party ahead of a EU leaders summit in Brussels October 15, 2008. EU nations are set on Wednesday to back calls for a root-and-branch overhaul of the world's financial structures in a bid to ensure no repeat of the worst credit crisis since the 1930s Great Depression. REUTERS/Francois Lenoir (BELGIUM)