name one un peace keeping success......genocide in bosnia....genocide in rawanda....genocide in east timor.....genocide in the sudan.....
You need to learn your history. There was never any genocide in East Timor, and the UN mission came AFTER Indonesia left. Its not perfect there, but its a LOT better than it was before hand.
As for successes: Kashmir/Cyprus/East Timor/El Salvador.
By the way...what exactly did you expect the UN to do in Rwanda, Bosnia, and the Sudan?