Either you abide by international law or the world descends into absolute chaos and anarchy. I agree that the UN has failed to prevent many wars and has often been a body which complies with the West to enable war - see how the UN sanctioned the illegal 2003 invasion of Iraq by the US and UK. What is the alternative? Everyone does what they please? In that case might equals right and weaker nations will club together as they are doing into supporting organisations such as BRICS which will in time become an alternative to NATO.