If a war really breaks out between Russia and Ukraine, the United States will at best be condemned by high-profile public opinion, which will lead to economic blockade or economic control by Western allies. There is little possibility of a direct armed conflict between Russia and the United States, because once a war breaks out between the two nuclear military powers in the world, the situation will get out of control, and even a new world war or nuclear war will be detonated, and mankind will face extinction. At that time, there will be no winner in the end of the war.