Agreed
Was Bush's war against Iraq wrong. Was the liberation of Kuwait from Sadam Hussain's oppression wrong?
No, it was not illegal because Bush sought and got approval for military action from congress making it constitutional. Then the USA got the UN security council to authorize force for the restoration of sovereignty and territorial integrity of Kuwait, a UN member state.
Was the intervention by Cinton in order to prevent mass blood shed and the spread of civil war in Kosovo wrong.
It was more than wrong, it was illegal. NATO's charter was violated, NATO had no charter authority to act as it did. In addition, Clinton refused to get UN Security Council authorization for military force before hand, thus making NATO's military action illegal under international law. NATO imposed a threat of war in the form of an ultimatum against the territorial integrity of a UN member state, also a high crime, the same crime for which Nazis were hanged for. Clinton also refused to get authorization for the air war from congress making any military action unconstitutional. When Clinton did take it to Congress (after military action began) Congress voted against military action thus denying constitutional legitimacy to military action by the USA over Kosovo.
You do not have to take my word for it because I am partisan. Tony Blair's own Labour party controlled Parliamentary commission came to the exact same conclusion House of Commons Foreign Affairs - Fourth Report [UK Admits NATO's Kosovo War Illegal].
But the KLA is doing this under the watchful eye of K-FOR, who is suppose to keep the peace.