"On the eve of the 10-year anniversary of Sept. 11, the Taliban have issued a defiant statement saying the US does not have the 'stamina' or the 'weapon of belief' to remain in the fight in Afghanistan. The Taliban also claimed that unlike the West, it possessed 'endless stamina for a long war.' " (h/t: Bill Roggio @ The Long War Journal)
As Field Marshall Bernard Law Montgomery (Lord Alamein) noted in a 1962 speech before the English Parliament:
"The US has broken the second rule of war. That is, don't go fighting with your land army on the mainland of Asia. Rule One is don't march on Moscow. I developed these two rules myself." (Wikipedia) [emphasis added]
