Brown and Sarkozy move to fund climate aid with global banking tax An EU summit in Brussels sought to boost the chances of a deal further by also pledging €2.4bn a year from January Tweet Read More… 12.12.09: Martin Rowson on Brown and Sarkozy's championing of a global banking tax Photograph: Martin RowsonIllustration: Copyright © Martin Rowson 2009 Illustration: Martin Rowson