This is misinformed. The UN does take a lot of 'actions', one of the most important ones being Peackeeping missions. The explicit mission of the UN is to avert

This is misinformed. The UN does take a lot of 'actions', one of the most important ones being Peackeeping missions. The explicit mission of the UN is to avert violent conflict. https://www.un.org/en/about-us/un-charter https://www.un.org/en/about-us/un-charter