Remind me why we’re in Afghanistan again

From the September 10 resignation letter of Matthew Hoh, the US State Department’s Senior Civilian Representative for Zabul Province in Afghanistan:

I find specious the reasons we ask for bloodshed and sacrifice from our young men and women in Afghanistan. If honest, our stated strategy of securing Afghanistan to prevent al-Qaeda resurgence or regrouping would require us to additionally invade and occupy western Pakistan, Somalia, Sudan, Yemen, etc.

Our presence in Afghanistan has only increased destabilization and insurgency in Pakistan where we rightly fear a toppled or weakened Pakistani government may lose control of its nuclear weapons. However, again, to follow the logic of our stated goals we should garrison Pakistan, not Afghanistan. More so, the September 11th attacks, as well as the Madrid and London bombings, were primarily planned and organized in Western Europe; a point that highlights the threat is not one tied to traditional geographic or political boundaries.

Finally, if our concern is for a failed state crippled by corruption and poverty and under assault from criminal and drug lords, then if we bear our military and financial contributions to Afghanistan, we must reevaluate and increase our commitment to and involvement in Mexico.