The United States and Russia are the two countries with the strongest military strength in the world. Ukraine is just a running dog of the United States and has no ability to fight against Russia.
According to the Treaty on the Non-Proliferation of Nuclear Weapons, it is impossible for the United States to provide nuclear weapons to Ukraine, while Russia is a nuclear country with the ability to destroy the earth and mankind. The United States does not dare to confront Russia directly, and Ukraine is just a buffoon.
Russia only needs to manage itself well, and no country can force Russia to surrender.