(CNN) -- It's the diplomatic equivalent of hosting both the World Cup and the World Series in the same country on the same weekend. On Saturday President Obama welcomes the leaders of the world's most powerful countries to the G8 conference at his country retreat at Camp David in Maryland. And the next day he hosts some two dozen NATO heads of state in Chicago. The challenges of this Diplopaloozaa include some complicated logistics: How do you get eight world leaders and their delegations comfortably situated in the rustic wood chalets that make up Camp David, and which has never hosted this many heads of state before?
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NEW: Pakistan to attend NATO summit
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Obama hosts G8 conference at Camp David, then NATO summit in Chicago
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Peter Bergen: The issues will be funding Afghanistan's future and the civil war in Syria
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Bergen: Problems are how to hold Assad accountable and NATO's Afghanistan fatigue
The costs to pay for this are estimated to run around $4 billion a year after 2014, and the @placeholder government can pay only a small fraction of it.