I have faith in the UN. There have been a few instances in which we doubt its capabilities (consider the controversy over the aid it has provided within the last year), but there is no reason to attack it or call it corrupt on that basis. In the half-century that the UN has been around, it has accomplished much more good than bad - check
www.un.org for a listing of some of these accomplishments.
If we look the services of the NGOs that I had mentioned, or others such as the International Red Cross, we can see that they indeed have proven to be successes. They provide resources, where there are none.
Also, multilateral action is not limited to the functions of the UN. The UN is simply an example of how such action would be achieved. With this, an alternative to the establishment of the draft can be found.