Doctors Without Borders

Multiple U.S. breakdowns may have led to the aerial pummeling.

At least three official investigations are underway, including a short-term NATO assessment that could open an early window into what went wrong. But on Wednesday, Doctors Without Borders, the international charity whose medical clinic was hit Saturday, called for an independent investigation, saying the attack was possibly a war crime and that U.S. and Afghan investigators cannot be relied upon to be impartial.

Amid accusations that U.S. jet fighters were responsible for what Doctors Without Borders said was a "sustained bombing" of their trauma center in Kunduz, President Barack Obama and Afghanistan's President Ashraf Ghani promised investigations.

Obama said he expected a full accounting of the circumstances surrounding the bombing, and that he would wait for those results before making a judgment.

He said the U.S. would continue working with Afghanistan's government and its overseas partners to promote security in Afghanistan.