After signing a 10-year lease and spending more than $80 million on a site envisioned as the United States' diplomatic hub in northern Afghanistan, American officials say they have abandoned their plans, deeming the location for the proposed compound too dangerous.

The embassy memo says the facility was far from ideal from the start. The compound, which housed a hotel when the Americans took it on, shared a wall with local shopkeepers. The space between the outer perimeter wall and buildings inside — a distance known as "setback" in war zone construction — was not up to U.S. diplomatic standards set by the State Department's Overseas Security Policy Board. The complex was surrounded by several tall buildings from which an attack could easily be launched.