'We, the undersigned civil society organisations from 23 countries, urge G-20 leaders to make concrete progress towards the introduction of an internationally coordinated financial transactions tax (FTT) at the upcoming summit in Seoul. Our organisations have long advocated that such taxes are a practical way to generate revenues needed to fill domestic and international financing gaps, discourage the type of short-term financial speculation that has little social value but poses high risks to the economy and serve as a desperately-needed and sustainable source of financing for health and development. In recent months, the case for an FTT has been strengthened with new inputs from sometimes unexpected sources.'