G20 Leaders account for 90% of the world GDP can you name them? UN Secretary General Ban Ki-moon, European Commission President Jose Manuel Barroso, Italian Prime Minister Silvio Berlusconi, British Prime Minister Gordon Brown, German Chancellor Angela Merkel, Spain President Jose Luis Rodriguez Zapatero, Turkey Prime Minister Recep Tayyip Erdogan, Indian Prime Minister Manmohan Singh, Canadian Prime Minister Stephen Harper, Australian Prime Minister Kevin Rudd, Japanese Prime Minister Taro ...