JOHN D MCHUGH/AFP/Getty Images

Canadian troops may have finally stopped handing off detainees to the Afghan authorities. That policy—always suspect from a human rights perspective—was the product of twin realities. First, NATO states such as Canada hated the optics of handing detainees to the Americans, what with Abu Ghraib and Guantánamo still on people's minds. Second, the Canadians, British, and Dutch troops fighting in southern Afghanistan had no desire to get into the detention business themselves.

The solution? Shuffle off detainees to the Afghans and pretend that the treatment they're getting is better than they'd get with the Americans. The policy protects delicate European sensibilities but does little to safeguard prisoners or to help NATO get good intelligence on Taliban activities (though I have been told by people in the know that captured Taliban fighters occasionally "fall off" NATO trucks and end up in American hands).

The issue of prisoners in Afghanistan has always struck me as a nettlesome problem that could easily become an important opportunity. My suggestion? Create a jointly run NATO/Afghan detention center in Kandahar or some other locale in southern Afghanistan. Use the detention center to simultaneously train Afghan police and interrogators (which we're doing anyway) and to hash out a common NATO policy on detention that can ease suspicions within the alliance while producing at least some actionable intelligence.

Thus far, American obstinacy and European fecklessness have scuppered common sense solutions. It's well past time to work together.