The Russian Revolutions in 1917 ended Russian involvement in WWI, but precipitated a civil war that dragged in outside powers and lasted for years as the Bolshevik forces sought to enforce control over all the former territories of the Russian Empire. The chaos allowed all manner of smaller movements and independent warlords to flourish for a time, and among them was the brutal so called “Bloody” or “Mad” Baron Roman von Ungern-Sternberg.
The first class of nuclear submarines were a learning experience for the Soviet Navy. The November class boats experienced numerous difficulties and accidents, culminating in what has been described as a potential “Underwater Chernobyl."