Leaders of Europe's big four economies speak at a mini-European summit in London
Britain's Prime Minister Gordon Brown (C), speaks as European Commission President Jose Manuel Barroso (L), French President Nicolas Sarkozy (2nd L), German Chancellor Angela Merkel (2nd R) and Italy's Prime Minister Romano Prodi listen during a news conference at the Foreign Office in London January 29, 2008. Leaders of Europe's big four economies called on Tuesday for better cross-border cooperation and for banks to be more open about risk as they try to calm financial markets and shore up confidence. The meeting, called by Brown, is intended to show the leaders can tackle a global economic slowdown. REUTERS/Kirsty Wigglesworth/Pool (BRITAIN)