What he failed to mention during the course of his talk, is the virtual certainty that such an action would lead to nuclear war between the United States and Russia. 

Contrary to what Zelensky, President Biden, the Pentagon, the CIA, members of Congress, and other interventionists would like to believe, the war in Ukraine is not about freedom. It is about NATO, a corrupt bureaucratic entity that should have gone out of existence when the Cold War racket came to an end. 

Zelensky wanted Ukraine to join NATO. So did Biden, the Pentagon, the CIA, and other interventionists. For some 25 years, Russia has made it clear that that is a "red line" for Russia. Why? Because if Ukraine joins NATO, the Pentagon and the CIA will be able to establish their nuclear missiles, tanks, weaponry, and military bases on Russia's border. Russia has steadfastly opposed that notion as fiercely as the U.S. government would oppose the same thing happening in Cuba or along the Mexico border.

Moreover, all the way up to the invasion, Russia made it clear that if Zelensky gave up his hopes and dreams of having Ukraine join NATO, there would be no Russian invasion of his country.