G20 leaders pose for a group photo at the G20 Summit in the Excel centre in London, April 2, 2009. They are from left, to right, back row Director General of the International Monetary Fund Dominique Strauss-Kahn, United Nations Secretary General Ban Ki-moon.Director General of the World Trade Organisation Pascal Lamy, Chairman of ASEAN, Prime Minister of Thailand Abhisit Vejjajiva, Italian Prime Minister Silvio Berlusconi, new partnership for Africa's Development (NEPAD) Meles Zenawi, Australia's Prime Minister Kevin Rudd, Japan's Prime Minister Taro Aso, President of the European Council Mirek Topolanek, Financial Stability representative Mario Draghi, and President of the World Bank Robert Zoellick. Middle row left to right. EU Commission President Jose Manuel Barroso, India's Prime Minister Manmohan Singh, Turkish Prime Minister Recep Tayyip Erdogan, U.S. President Barack Obama, Russian President Dmitry Medvedev, South African President Kgalema Motlanthe,Dutch Prime Minister Jan Peter Balkenende, Spanish Prime Minister Jose Luis Rodriguez Zapatero, and German Chancellor Angela Merkel. Front row left to right, Korean President Lee Myung-bak, French President Nicolas Sarkozy, Saudi Arabia's Foreign Minister Prince Saud Al-Faisal, China's President Hu Jintao, British Prime Minister Gordon Brown, Brazil's President Luiz Inacio Lula da Silva. Indonesian President Susilo Bambang Yudhoyono, Mexico's President Felipe Calderon, and Argentina's President Cristina Kirchner.