Winning in Afghanistan is having a country that is stable enough to ensure that there is no safe haven for Al Qaida or for a militant Taliban that welcomes Al Qaida. That's really the measure of success for the United States.
It doesn't make a lot of sense for us to borrow money from the Chinese to go give to another country for humanitarian aid. We ought to get the Chinese to take care of the people.
One demonstration of extremists, any more than a Ku Klux Klan demonstration in the United States, is not necessarily reflective of what the rest of the country feels.