The presidents of France and Brazil emphasized the need for rich countries to increase aid for developing nations in order to combat global warming and reach a climate agreement in Copenhagen. Brazilian President Luiz Inacio Lula da Silva highlighted progress made by China and the United States in reducing greenhouse gas emissions, but stressed that more support is required for poor countries to address climate change and meet their goals. Lula emphasized the importance of assisting the less fortunate while maintaining sovereignty, citing Brazil's investment fund for the Amazon rainforest as an example where donor countries have no control. Norway has currently given the most donations. Progress in addressing how wealthy nations can assist poorer ones in combating global warming has been limited among climate negotiators. French President Nicolas Sarkozy emphasized the necessity of numerical data and financial support from developed countries to developing nations at the Copenhagen conference. Sarkozy, representing French Guyana as part of the Amazon basin, stressed the urgency of taking action immediately. Sarkozy expressed his approval of the emissions reduction target announced by Washington for 2020. The European Union estimates that $100 billion annually is needed to aid developing nations in fighting global warming. Developing countries argue that wealthy nations should contribute between 0.5 and 1 percent of their GDP. Brazil has committed to reducing its greenhouse gas emissions by up to 38.9 percent by 2020 and is pushing for a stronger presence in climate negotiations, hoping to unite Amazon nations for the upcoming Copenhagen summit. However, only one other South American leader, Bharrat Jagdeo of Guyana, attended the recent summit in Manaus.