For weeks, Berlin has been insisting that no further economic stimulus packages are needed. Leading US economist Adam Posen told SPIEGEL ONLINE that Merkel's approach is a mistake. Yet he is also critical of Obama's strategy. SPIEGEL ONLINE: Former British Prime Minister Margaret Thatcher famously declared at EU summits: "I want my money back." Can we expect a similar performance by German Chancellor Angela Merkel at the G-20 summit in London? Will she tell US President Barack Obama and other world leaders that she does not want to spend more of her money on economic stimulus, as she insisted over the past few weeks? http://www.spiegel.de/international/world/0,1518,616561,00.html