IN a pebble-strewn river valley enclosed by bare jagged mountains, smiling Afghan boys run alongside the foreign soldiers, as boys often do. The foreigners are US Marines and the boys often ask them for a dollar, a biscuit, a pen. And they ask: "How are you?"

On this day a Marine gives his standard reply to a mate, who records it on video.

"I'm on a field op. I have no f---ing money." As for the biscuit: "Do I look like Little Red Riding Hood, carrying around a load of biscuits? What the f---?"

What about the pen? "What the f--- they want a pen for?"

And how is the Marine doing? "I'm doing bad. That's how I'm doing. I'm in this shit-faced country."

The scene, and what it revealed about the attitudes of US troops, shocked US officers when it was posted on Liveleak.com, a video website, earlier this year.

In the video a Marine says to one of the boys: "You know your country stinks like ass? What you think about that? You think it sucks? You stink like ass, too."