History repeats.
Many had tried and failed to untie the knot, and Alexander's generals were undoubtedly a bit nervous about the bad mojo that would result if Alexander failed in the task. In fact, it was a bold move to enter Gordion and attempt the feat, for failure would demoralize an army that was highly superstitious.
Alexander walked up to the acropolis, entered the temple and stood before the knot, deep in thought. Presently, he spoke. "It doesn't matter how the knot is loosened". He drew his sword, cutting the rope and thereby achieving an untying of the knot.
It's time for us to cut the Gordion Knot that is UN politics. We can have Colin Powell try to untangle the diplomatic wishes of Cameroon, Mexico and Angola. Or we can unsheath our sword, cut through that morass of filth and stench, and do what we wish to do.
Alexander went on to conquer Asia (at least, the part that was known to the Greeks, and some parts beyond). Let's cut our own Gordion Knot and be done with Iraq, the UN, and the terrorists beyond.
Easy: Never.