There is a frequent question today, "Why didn't we finish the job in Afghanistan?" Democrats ask this as a rhetorical question that is actually an implied criticism of the Bush Administration. The answer to the question is that the enemy has a lot of support amongst the the population, but, more importantly, the Taliban and al queda have sanctuary in the neighboring country of Pakistan. Specifically, the area is nominally Pakistan, but the government actually has little control there. Nevertheless the US is not politically able to pursue our enemies into that region. It is difficult to defeat an enemy that has a nearby sanctuary. So, unless the US is willing to go to war with Pakistan, it is difficult to "finish the job."