We're always ending up in some type of conflict, and the conflicts are typically driven by economic/food needs and power plays. This has been going on since before humans began creating large civilizations. History repeats itself in this way and I don't see this coming to an end. Even other species have similar dynamics in play among their domains. That's life. We advance in our capabilities, obviously and I don't think Putin will stop at Ukraine, nor do I think China is rubbing shoulders with for a piece of the Ukraine pie. Who else is involved? Russia, China, North Korea are the top 3 concerns, but then there's also India and Hungary, Iran, etc. who have been or seem to be sympathetic to Russia's cause. Cyber wars, propaganda wars, psychological warfare, on to possible bio, germ, chem, etc. are all weaponized systems able to be utilized. Nukes? Geesh, they seem a bit counterproductive, but they remain in the realm of concern. I simply feel like we have a long one coming on one day and that negotiations may delay the inevitable but not prevent it. Where I'm from people are still creating controversy over cigarette tobacco and MJ reform. It's crazy.
Yes, there are power plays at work. The thing is, the West essentially conquered most of the world centuries ago. The United States of America is merely a product and outgrowth of that conquest and became the predominant hegemonic power in the Americas. France and Britain gained control over Africa and large parts of Asia, as well as all the sea routes. Clearly, they didn't want countries like Germany or Russia muscling in on their action.
Of course, it should be noted that, throughout most of history, if a country wanted to make a power play or grab territory, they just did it (if they thought they could win). They didn't have to invent any pretext, other than national glory and booty. In conquering the Americas, the Spanish battle cry was "Gold, Glory, and God." In the War of 1812, the battle cry in America was "On to Canada!" Nobody needed a reason; they just wanted it, so they were going to try to grab it (although America failed in that quest).
So, even if economic needs and power plays are a human constant, the emphasis on facades and obsession over maintaining an image of "legitimacy" is something relatively new to human history.
For example, after the overthrow of the US-backed Batista regime in Cuba, the U.S. wanted to get rid of Castro's communist regime and restore a US-friendly government. But they couldn't just invade outright, as that would make us look bad, so they had to cook up some scheme to make it look like it was Cubans themselves overthrowing their own government. If the US military had simply invaded outright, they could have won and taken over Cuba, but someone tied their hands, which led to the operation's failure.
So, it's true that the world largely operates the same way, with power plays and grabbing for land, power, resources, food, etc. It seems it's always been that way, for as long as recorded history. But what's different in more recent times is...the lie. The hypocrisy. The pretense of "enlightenment" where there is none.