They come, they wreak havoc, they die.
Caesar, the Tsar, the Kaiser–all variations on the same title. Each intending to assume total power and control over a major portion of the world. Unfortunately, we have learned little, so we face the same thing over and over. We do not learn from history, so we are doomed to repeat it. The titles may change, but little else.
One might have thought that modern humans would have learned after dealing with Hitler, Stalin, and Hirohito all at once. Alas, one generation may, indeed, learn. It may even attempt, and occasionally succeed, in teaching the next generation. To expect anything beyond that is folly.
Today, we again are faced with another slate of those who would be Caesar. Vladimir Putin is has unified his power in Russia and already “annexed” parts of Georgia and Ukraine. Xi Jinping has consolidated his power in China and is extending his reach throughout Asia, Africa, and even South America. Kim Jong Un has his little corner of the world, but would gladly, if given the chance, expand his territory.
And, as you know, there are others.
When leaders demand or expect loyalty to themselves, rather than to a higher cause, expect trouble. Unfortunately, the road is dependent on obtaining that which gets the individual into power, not that which is best for the common good.
The good news is that since the twentieth century, most empires arise and disappear within a relatively short time. The bad news is that during that time, great damage and havoc occur, harming millions, and taking many generations to correct.