doctors without borders hospital

The latest attack comes while the U.S. is still investigating the bombing of one of the group's hospitals in Afghanistan.
There's just one problem: It needs the U.S. government's permission to start investigating.
Obama has apologized for the bombing of a Kunduz hospital, but will we ever know how this happened?
He says that the Doctors Without Borders hospital bombing investigation will be complete within 30 days.
The weekend attack in the northern city of Kunduz killed at least 22 people.
Defense Secretary Ash Carter said the Pentagon "deeply regrets" the loss of life.
He suggested the tragedy could have been avoided with more U.S. involvement.