America should abandon its pretensions that it can make Iraq a functioning democracy and halt the civil war. Instead, we should focus on a minimalist definition of our interests in Iraq, which is to prevent a militant Sunni jihadist mini-state from emerging and allowing Al Qaeda to regroup.

While withdrawing a substantial number of American troops from Iraq would probably tamp down the insurgency and should be done as soon as is possible, a significant force must remain in Iraq for many years to destroy Al Qaeda in Iraq.

This is a Peter Bergen op-ed from last week.