UN peace-keeping forces do not engage in war-fighting in the way you indicate here. They don't even engage in what is called "Chapter 7" active peace enforcement, i.e. disarming combatants, as you describe in most cases.

In order for the UN's troops to enter a country, they would have to first have a Security Council resolution negotiated among 5 permanent members among the world's great powers, and 10 elected members.

The chances of any action being taken against Uzbekistan with Russia as a permanent member -- and veto-wielding member -- are virtually nil. Russia is very aggressive about keeping the U.S. and other powers out of its sphere of influence.

Russia and Uzbekistan are members of the post-Soviet Collective Security Treaty Organization and watch each other's backs although they have their internal disputes.

I can't think of a single case lately where the UN has "gone into a city" and behaved in the way that you indicate here.
Source(s):
http://www.un.org

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