America can only stop the war of Ukraine and Russia if they follow it dialogue. But were by america supporting Russian or neither Ukraine by giving each of the country war supplements. With this method i fish out that it means the war can never come to end. I think world peace keeping ambassador is still existing.so with this sector or set of government function can call the problem of Ukraine and Russia to bar. And it can only happens if peace making ambassador is mandated to do so with other top countries support