Afghanistan has been called the 'graveyard of empires' - a land that has never been conquered by a foreign force.

Russia's red army spent a decade there and returned to the Soviet Union broken and defeated.

As the US sends more troops to Afghanistan, it could learn from the former Soviet Union's experience there.

Al Jazeera's Neave Barker reports from Moscow on the lessons to be learned.

Source: Al Jazeera