Can the United States win the war in Afghanistan?

In my opinion I believe that the war between the United States and Afghanistan is extremely difficult. But, if I had to choose which country has the greatest possibility I would pick the United State. Although the U.S. basically built up their own enemy by training soldiers in Afghanistan. I believe with new technology,strategies, and strength the U.S. can defeat Afghanistan soldiers. But, it will take the United States an enormous amount of energy and power to win this war. Personally, I believe if the U.S. created this issue than they have the ability to overcome any obstacle Afghanistan throws in their path.