Apologies are not sufficient when it comes to civilian casualties, Afghan President Hamid Karzai told the NATO commander Sunday, days after a NATO airstrike killed nine Afghan boys.

Karzai told Gen. David Petraeus, the commander of U.S. and NATO forces in Afghanistan, that incidents of civilian casualties during coalition military operations are the main reason for tensions in the U.S.-Afghan relationship and he demanded there be no more, according to a statement from Karzai's office