On Wednesday, new Greek Finance Minister Yanis Varoufakis met with European Central Bank President Mario Draghi. On Thursday, he will meet German Finance Minister Wolfgang Schaeuble. These meetings are part of Varoufakis' tour of Europe — including London, Paris, Rome, Frankfurt and Berlin — undertaken since the Coalition of the Radical Left, known as Syriza , won Greece's general election Jan. 25. Draghi appears to be Greece's most important interlocutor. Though the International Monetary Fund and the eurozone hold the majority of Greece's bonds, it is the European Central Bank that has the power to collapse the Greek economy by refusing its banks liquidity assistance. Still, the Thursday meeting with Schaeuble is likely to prove more definitive. The European Central Bank's track record of threatening member states with economic collapse if they do not comply with bailout programs is well known.