The explanation for why we're in afghanistan is 1 word long:
Oil.
Have you guys looked at a map lately?
What two countries have we invaded?
Afghanistan and Iraq.
How long was the Iraq invasion supposed to take? A few months. The Iraqis were supposed to greet us with open arms, remember?
What's in between Afghanistan and Iraq?
Iran.
What are we doing with Iran right now? We're giving them trouble over allegedly having the makings of weapons of mass destruction (nukes or nuclear capability).
Understand that Iraq, Iran and Afghanistan represents some of
the last low-hanging fruit where oil is concerned. There's more out there, but it's under miles of water or meters of perma-frost... or in stable South American countries that wouldn't stand for a U.S. presence in the region.
What did they Bu$h administration want to do? Simple: they wanted to use the will of the people after 9/11 to go after terrorists & alleged terrorists in oil rich areas to secure middle eastern oil for America. We were supposed to take over Afghanistan and Iraq and then go after Iran from two sides with the assistance of Afghani and Iraqi forces. Along with Kuwait, Israel and Saudia Arabia, we would have a massive presence in the mid east and be able to secure oil supplies.