Since when was bombing that contravenes UN resolutions legal in any sense of the word?

"Legal" when used internationally as a word is an indicator of various conventions, and delegated to UN to comment on a situation. Conflict as opposed to war, and this is conflict, means it has no legal right through The UN. The USA of course feel that hosting The UN is enough, responsible participation seems to be optional.

Or at least till now. Obama and Kerry seem to be stirring and hearing the grinding of the beans.