"But this moderate tone gains Obama the leverage that Bush lacked. As long as the US asserted that Afghanistan was an existential threat, the front line in the war on terror, and that, therefore, failure was not an option, the US had no leverage over Karzai. The worse Afghanistan behaved—the more drugs it grew and terrorists it fostered—the more money it received. If it sorted out its act, it risked being relegated to a minor charitable recipient like Tajikistan. A senior Afghan official warned me this year “to stop referring to us as a humanitarian crisis: we must be the number one terrorist threat in the world, because if we are not we won’t get any money.” By asserting convincingly that Afghanistan is not the be-all and end-all and that the US could always ultimately withdraw, Obama escapes this codependent trap and regains some leverage over the Afghan government."
— Afghanistan: What Could Work, by Rory Stewart