
The sense of unknown was pervasive during the CIA's nightly al Qaeda threat briefings in the first years after 9/11. Was a second catastrophe in progress? Were its perpetrators deployed? Might they use chemical, biological, or nuclear material? Our knowledge of al Qaeda grew quickly in 2002 and afterward, but we knew that our window into the group was nowhere near good enough to assure policymakers, legislators, and the American people that we in the agency, where I served from as deputy director of the Counterterrorist Center from 2003 to 2005, could prevent another strike.
The United States entered Afghanistan to resolve this threat, to hunt those who had orchestrated the 9/11 murders, and to disrupt, then dismantle, the network that would organize future plots. The Bonn diplomatic process that resulted in the creation of Hamid Karzai's government in Kabul supported this goal of uprooting and eviscerating al Qaeda. We would help Afghanistan choose legitimate, competent leaders who would not allow terrorist safe havens on Afghan soil. But there was not going to be any nation-building effort, and certainly not on the scale of the Marshall Plan in postwar Europe. U.S. troops weren't fighting in the hills of Tora Bora as a result of civil unrest and Taliban atrocities: After all, we chose not to intervene in Afghanistan before the attacks, despite rampant human rights abuses and seemingly interminable chaos. We simply wanted to stop attacks at home.
Now, nine years later, the link between terrorism and the war is obscure. Americans now wonder why their sons are still fighting and dying for the Karzai government, with its periodic criticism of coalition operations and reputation for corruption, including during elections this year. Yet we are still there, perhaps because we have incurred such a cost by intervening in Afghanistan that we cannot bear to consider disinvesting. Perhaps because our national reputation is at stake: Cut out now and we will be perceived as shortsighted (remember the Somalia and Lebanon withdrawals during the 1990s), not a characteristic of great powers. This is not to say we should be cautious about setting withdrawal timetables; instead, our question might be how we maintain a counterterrorism capability rather than whether we have the capability to oversee a return to some sort of Afghan normalcy.
We shouldn't delink these problems, though, for brutal but inescapable national security reasons: If our initial intervention stemmed from the attacks, should not follow-on decisions, such as whether to speak to the Taliban about reconciliation, relate directly to the al Qaeda fight? If we want to destroy al Qaeda, does our current strategy of isolating the Taliban -- which has a far greater penetration of Afghan society and provincial life that we or the Kabul government ever will -- make sense? It does if we want to build a civil society; it doesn't if we want local Taliban leaders to limit an al Qaeda presence because it might interfere with their goal of creating an Afghan emirate.
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