The Taliban never intended to conquer the world. You have to understand their mentality. They only wanted a better Afghanistan free from drugs, prostitution etc. That's why they stood up (a talib is a student). Before 9/11 the US never cared for the Taliban because they were harmless. The US only came after Al Qaida. The Taliban even offered to hand over Bin Laden, which the US refused because they wanted the country. Now the Taliban are fighting for their homeland (can you really blame them for that).
And once the US leaves, the Talibs will come back into power because the Afghan government is weak and is mainly Tajik. Most of the population of Afghanistan is Pushtun and so are the Talibs. Do you really think the majority Pushtuns will support the Tajik government once US leaves. Pushtuns always support their tribe first (that's their mentality).
Once the US leaves, Pakistan will have a chance to sort itself out. At the moment the military is using this to their advantage by playing their double game with the US and Pakistani people. They are diverting the education, health and other budgets to themselves and also taking money from the US. This is what Imran is trying to sort out. That is why he wants the US gone, so that Pakistan has a chance to manage its problems. But I don't know how he will manage the ISI, however has Zardari managed it, or did Sharif manage it. We aren't voting for Imran to manage the military, we are voting for him because he is better than the rest and he will improve the situation in Pakistan.