There is little reason to believe that the Taliban will succeed in rapidly forcing the Karzai government out of power. The Taliban has been failing to retake the ground they have lost after offensives by NATO forces so even if the Afghan National Army fails to take more ground it seems unlikely the Taliban will quickly succeed in driving on Kabul. [1] In the unlikely event that the Taliban does begin winning the US and other NATO states are not going to sit back and let the Afghan government fall. David Cameron, the British Prime Minister has said “The clear message is to the Taliban that you can't just wait this out until foreign forces leave in 2014. We will be firm friends and supporters to Afghanistan long beyond that.” [2]  [1] American Enterprise Institute, ‘Why we must win in Afghanistan’, 17 October 2012  Biddle, Stephen, ‘Salvaging Governance Reform in Afghanistan’, Council on Foreign Relations, April 2012  [2] Mason, Rowena, ‘David Cameron: Taliban could be waiting for British troops to leave before trying to take Afghanistan’, The Telegraph, 19 July 2012