What?
Russia, the LARGEST country in the world needs MORE LAND in order to protect their land from.... I mean, who's invaded Russia in the last 100 years? Hitler. Hitler's dead.
The US, the world's largest military doesn't dare invade Iran or Venezuela. Why would they invade Russia?
The Russians were able to lease ports in the Crimea before. They literally had land the touches the black sea, they could have build a port on the Black Sea had they wanted to.
The problem with Russia's invasion of the Ukraine is all about FOOD.
In a world that has too many people, food will be essential. When Russia and the Ukraine had a drought, the Arab Spring happened.
That's because Russia and the Ukraine produce so much excess food that it means so many countries are reliant upon them. If Russia gets the Ukraine, it will hold sway with so many countries, especially countries that don't produce enough food, read OIL RICH COUNTRIES which the US relies upon.
See the problem here?