The NYT has an interesting piece on "invisible refugees" in Pakistan, Pashtun families who've fled south to escape the fighting between Pakistani forces and militants. They're "invisible" because instead of taking refuge in camps, they're turning to their fellow Pashtun for support. The result is families of 10, 20, 40 and more cramped into unbelievably tight quarters, sometimes displacing their own hosts, and stretching the limits of both Pashtun hospitality and local infrastructure: 

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