http://www.nato.int/isaf/docu/official_texts/Tactical_Directive_090706.pdf
...I recognize that the carefully controlled and disciplined employment of force entails risks to our troops...
...The Taliban cannot militarily defeat us - but we can defeat ourselves...
This is all that comes to my mind when I read that:
We are pinned down. We are running low on ammo. We have no air. Weve lost today, Marine Maj. Kevin Williams, 37, said through his translator to his Afghan counterpart, responding to the latters repeated demands for helicopters.
Were pinned down: 4 U.S. Marines die in Afghan ambush
http://www.freerepublic.com/focus/f-news/2335142/posts