Russia is a European country with a considerable territory. Its territory spans two continents: Europe and Asia. The most developed places in Russia are concentrated in Europe, so it is very important for Russia to have an ideal seaport. Although Russia also has a seaport in Asia, its importance is too low. Ukraine is a country along the Black Sea. When Russia throws away Ukraine, it is equivalent to throwing away half of the Black Sea.

If Russia owns Ukraine, the surrounding waters will become Russia's internal sea. The Crimean War and the Ukrainian War are problems that Russia and western countries cannot solve. Western countries want to expand eastward, and NATO also wants to expand eastward. As far as Russia is concerned, it hopes to develop in deeper places and also hopes to have a maritime front. Therefore, Ukraine has become a stage for various political forces to compete, and many countries want to eat this meat. Ukraine's strategic position is quite important.

For Russia, Ukraine is like its own backyard and a barrier to defend Russia. Ukraine was a very important grain producing area during the Soviet period, with relatively developed industry and agriculture. If Russia wants to restore its glory, it is very important to occupy Ukraine, because Ukraine can be its solid rear.

Now NATO is expanding eastward, which is not good for Russia. Ukraine is Russia's last barrier. Once Ukraine falls into the hands of other hostile countries in Russia, Russia will be in danger.