Here's the instance in which it will change, and NATO will become involved:
Pictures of dead Ukrainian children get out into the world. The World, the United Nations, NATO, the United States of America become outraged at Putin's genocide against the Ukrainian peoples, civilians, women & children.
Multiple countries demand an immediate cessation of hostilities and a withdrawal of Russian forces back to pre-2022 locations; otherwise a declaration of war against Russia, by the UK, Poland, Romania, Norway, Germany, and France. Uncertain on Canada, but the U.S. will join them although... there's always Congress to get through.