Who are the leaders of the G20 countries?

Argentina: President Cristina Fernández de Kirchner Australia: Prime Minister Kevin Rudd Brazil: President Luiz Inácio Lula da Silva Canada: Prime Minister Stephen Harper China: President Hu Jintao France: President Nicolas Sarkozy Germany: Chancellor Angela Merkel India: Prime Minister Manmohan Singh Indonesia: President Susilo Bambang Yudhoyono Italy: Prime Minister Silvio Berlusconi Japan: Prime Minister Taro Aso Mexico: President Felipe Calderón Russia: President Dmitry Medvedev Saudi Arabia: King Abdullah South Africa: President Jacob Zuma South Korea: President Lee Myung-bak Turkey: Prime Minister Recep Tayyip Erdoğan United Kingdom: Prime Minister Gordon Brown United States: President Barack Obama