You know you've been at war for too long...

...when your enemies have no idea why you're trying to kill them:

Few Afghans in Helmand and Kandahar provinces, Taliban strongholds where fighting remains fiercest, know why foreign troops are in Afghanistan, says the "Afghanistan Transition: Missing Variables" report to be released later on Friday.

The report by The International Council on Security and Development (ICOS) policy think-tank showed 92 percent of 1,000 Afghan men surveyed in Helmand and Kandahar know nothing of the hijacked airliner attacks on U.S. targets in 2001.

"The lack of awareness of why we are there contributes to the high levels of negativity toward the NATO military operations and made the job of the Taliban easier," ICOS President Norine MacDonald told Reuters from Washington.

"We need to explain to the Afghan people why we are here, and both convince them and show them that their future is better with us than the Taliban," MacDonald said.

And yet we Americans still can't figure out why so many people hate us.