The Taliban face a frontal challenge in cementing control of Afghanistan: Money. Despite their dominant military blitz over the past week, the Taliban lack access to billions of dollars from their central bank and the International Monetary Fund that would keep the country running during a turbulent shakeup. Those funds are largely controlled by the US and international institutions, a possible leverage point as tense evacuations proceed from the airport in the capital of Kabul. Tens of thousands of people remain to be evacuated ahead of the United States’ August 31 deadline to withdraw its troops from the country. But the Taliban also do not currently have institutional structures to receive the money a sign of the challenges it might confront as it tries to govern an economy that has urbanized and tripled in size since they were last in power two decades ago. The shortfall could lead to an economic crisis that would only fuel a deeper humanitarian one for the roughly 36 million…