There is obviously something peculiar about a global financial system in which the richest country in the world, the United States, borrows more than $2 billion a day from poorer countries – even as it lectures them on principles of good governance and fiscal responsibility. So the stakes for the IMF, which is charged with ensuring global financial stability, are high: if other countries eventually lose confidence in an increasingly indebted US, the potential disturbances in the world’s financial markets would be massive.