Today was a particularly deadly day in Afghanistan. Eight Americans, non-military personnel, believed to be CIA employees, were killed when a suicide bomber walked into their eastern Afghanistan compound and detonated a device strapped to his chest.
And five Canadians - four of them military, the fifth a journalist, were killed by an explosion in southern Afghanistan.
"Today was a very difficult day for international personnel in Afghanistan, military and civilian," said NATO Secretary General Anders Fogh Rasmussen.
"On behalf of NATO, I express my condolences to the families of those who lost their lives. Their sacrifice is part of a very necessary effort to help bring greater security to the entire international community."