Kabul Bank, Afghanistan’s largest bank, may have “lost” up to $900 million, through fraud and mismanagement. Though the Afghan government vows to keep the bank afloat, the money to do that will have to be drawn from an already strained budget. Officials fear that word of the magnitude of this loss could start a run on all banks, solvent or not. Such a run would destroy the banking system of the country and cause Western investors to question the wisdom of pouring in more money.