A hospital in the Afghan city of Kunduz has been hit and partially destroyed in an overnight “aerial attack” that killed at least 12 Medecins Sans Frontieres staff. NATO has admitted a US airstrike may have caused accidental “collateral damage.”

In a brief statement released by the White House, President Obama has extended his “deepest condolences” to the victims of the “tragic incident at a Doctors Without Borders hospital in Kunduz.”