This is kinda interesting but less than surprising is you've read Lawrence Wright
Former FBI translator Sibel Edmonds dropped a bombshell on the Mike Malloy radio show, guest-hosted by Brad Friedman (audio, partial transcript).
In the interview, Sibel says that the US maintained 'intimate relations' with Bin Laden, and the Taliban, "all the way until that day of September 11."
These 'intimate relations' included using Bin Laden for 'operations' in Central Asia, including Xinjiang, China. These 'operations' involved using al Qaeda and the Taliban in the same manner "as we did during the Afghan and Soviet conflict," that is, fighting 'enemies' via proxies.[From Daily Kos: State of the Nation]
Of course, if true, the very uncomfortable part is that this implicates both Bush / Cheney and Clinton. Not that that is such a surprise as it was mostly under Clinton's watch that half a million Iraqi kids were sanctioned, with Saddam taking a fairly hefty portion of the blame too, to an early grave.