Russian President Vladimir Putin stated that the war was unjustified.[4] In a televised conference before a meeting with the US envoy to Iraq, Putin said that "The use of force abroad, according to existing international laws, can only be sanctioned by the United Nations. This is the international law. Everything that is done without the UN Security Council's sanction cannot be recognized as fair or justified."
And showed Putin that the US/UK won't play by the rules, so now he has also ignored those rules ever since.