HAS AMERICA FORGOTTEN THAT THE SOVIET UNION WAS DEFEATED IN AFGHANISTAN?

I am somewhat confused over the Obama administrations recent firing of the US Afghanistan Commander and replacing him with a General who knowingly and intentionally filed and forwarded false reports in the Tillman death.

What amazes me even more is Obama's claims that Afghanistan is where we need to be. Has America forgotten that Russia was engaged in a war with the Taliban in Afghanistan for years and was beaten into withdrawing their forces?

Can anyone explain Obama's desire to continue to order