The U.N. Security Council is the part of the U.N. that matters, Teribus, when it comes to actually doing anything substantial, and it is nothing more than a compliant tool of a few great powers, most primarily of the USA. It rubber stamps something when they need it to, in order to provide a flimsy veneer of supposed moral legitimacy for an immoral act. It's a toothless puppet that does whatever its puppetmasters require of it...the primary purpose being to fool the domestic public of the USA and other western powers into going along with the charade.

The USA's client regime in Afghanistan, run by their "Najibullhah", Mr Karzai, will no doubt survive for a short while after the western military forces leave, just as Najibullah survived for a short while after the Russians left. And then it will fall, as Najibullah fell.

The West is getting out of Afghanistan for the same reason the Russians did. They can't afford to stay there much longer.

I expect the strongest tribe in that nation, the Pashtuns, will again be running the place not too long after the USA and its allies depart, and Mr Karzai's administration will be gone. This is what happens to neo-colonial stooges who try to take over Aghanistan, regardless of whether they are British, Russian or American neo-colonial stooges. They lose eventually. They leave. And the Pashtuns end up running the place again. And the various weaker tribes (Tajiks, Hazaras, Uzbeks, etc) grind their teeth, some go off into the hills to snipe at the Pashtuns, and life goes on much as it did before.

But what a shame that the poor old USA corporations probably won't get to pipe their oil through Afghanistan from the Caspian region after that! (sniff! sob!)

There is one great power that I think might someday be able to occupy Afghanistan and succeed in staying there...China. And why? Well, by the simple expedient of moving in so many ethnic Chinese immigrants that they end up outnumbering the local population. The "Tibetan" solution, in other words. That's something the USA is never going to be able to do nor could the Russians, but I can see where the Chinese might manage it...theoretically.