[UPDATE 24 Jun 2011: the LA Times reports an interesting response from Wenham's colleagues to what seems a reasonable request from the Afghan president:
Karzai said at a news conference in Kabul: "This should be the last attack on people's houses. Such attacks will no longer be allowed."
His call was viewed as mainly symbolic. Western military officials cited existing cooperation with Afghan authorities and pledged to continue consultations, but said privately that Karzai's presidential authority does not include veto power over specific targeting decisions made in the heat of battle.
(via Glenn Greenwald, via Anonymous at Aaronovitch Watch)]