Napoleon Bonaparte in full imperial regalia. He got close to creating a European Empire, but he failed in the end. He faced the same strategic problem that other would-be European Emperors faced: having to fight on two opposite fronts at the same time, against Russia and against Britain. At present, the European Union (another form of European Empire) is facing the same strategic problems And it is being defeated, although in an economic war rather than in a conventional military one.
One of the fascinating things about history is how people tend to repeat the same mistakes over and over. A couple of generations are more than sufficient for leaders to forget everything their predecessors did, and run straight into a new -- but similar -- catastrophe. It is also called "history never repeats itself, but it does rhyme."
Then, among the fascinating sections of history, there is how people tend to get together to form those entities that we call "states" or, if they are large, "empires." They grow, they decline, they collapse, in a dance that lasts for centuries and that normally implies war, exterminations, and great suffering for large numbers of people. But most people seem to think that these purely virtual entities are important enough that human lives can be sacrificed to them. On this, history has been rhyming for a long time.
Europe was often on the verge of becoming an empire, a single state with a centralized government. But that never happened. After the fall of the Roman Empire, Charlemagne was perhaps the first to have a go at a European Empire, during the 8th century AD. His "Holy Roman Empire" survived for nearly a millennium, but never included all of Western Europe. Then it was the turn of Napoleon Bonaparte, then the German Kaiser, then the German Nazis, and, recently, the European Union that, for the first time, didn't rely on military might. They were all failures, including the European Union -- an entity that nobody seems to want any longer.
How should we see these events? A failure or a blessing? Of course, empires are not benevolent entities, and sometimes they do great damage. But a central European government might have avoided at least some of the bloodiest episodes of internecine European wars. It might also have injected some rules into the otherwise lawless worldwide expansion of the European states. The Holy Roman Emperor Charles V (1500-1558) enacted laws designed to stop the enslavement and the extermination of the Native Americans by the European colonists. Charles V ruled only part of Europe and these laws were ineffective. But we may imagine that, if they had been backed by a strong central authority, they could have helped the Native Americans to survive the European onslaught.So, why couldn't Western European states create a central government? After all, when it was a question of making some money by military conquest, they didn't find that it was so difficult to fight together. It happened during the crusades (12th-4th century), the attack on Russia by Napoleon in 1812, the Crimean war (1853-1856), the attack on China during the Boxer rebellion (1899 -1901), and a few more cases. But, normally, the European states preferred to carve their own empires and destroy each other in internecine wars.
One major problem for a European government is simply geographical. Europe is a peninsula of Eurasia that ends with the Urals, but that's just a convention. Are the Russians Europeans? In many ways, yes, except when their Western neighbors decide that they are barbarians to be exterminated (as during WW2) or, at least, people whose culture is to be rejected or annihilated (as it is happening nowadays). So, where is the Eastern border of Europe? Nobody knows, and that's a sure recipe for war.
Then, on the Western side, is Britain part of Europe? Geography says that it is, but do the British consider themselves Europeans? The best that can be said is that they normally do, but only when it is convenient for them. During WW2, there was a common saying in Italy that went as "che Dio stramaledica gli inglesi" (may God heavily curse the British). A bit nasty, sure, but it highlights a certain feeling that continental Europeans have for Britain.
Geography dominates politics, and the result is that all the attempts to create a stable coalition of European states faced, and still faces, an unsolvable strategic problem. At Europe's borders, on the East and the West, there are two powerful states, Great Britain (now largely replaced by the US Empire) and Russia (for a period, in the form of the Soviet Union). Neither has an interest in seeing a strong Europe arising, and they normally consider avoiding that as one of their strategic priorities. Neither Russia nor Britain ever were interested in invading Europe. The case is slightly different for the US Empire, which does keep its military stationed in Europe. But, even so, the US occupation is more a question of political, rather than military, control. In any case, during the past few centuries, emergent European Empires usually found themselves fighting on two opposite fronts, on the East, and on the West. An impossible strategic situation that always ended with not just defeat, but catastrophe.
It was Napoleon who inaugurated the challenge of fighting Britain and Russia at the same time. The resulting disaster led to the disappearance of France from the list of the world's "great powers." Then, it was the turn of the German government to do the same mistake. As a remarkable example of the stupidity of government leaders, they managed to do it twice, in 1914, and in 1939. Note, incidentally, that Adolf Hitler himself, wrote in his Mein Kampf (1933) that Germany should never find itself fighting on two fronts. And then, he led Germany exactly into that! The mind of the "great leaders" is often imperscrutable, but you may be justified in thinking that they are not as smart as their followers think they are.
After the catastrophe of World War 2, Europeans seemed to realize that the attempt to unify Europe by military means was hopeless. So, they tried a combination of diplomatic and economic actions. It was not a bad idea in itself, but it failed utterly as the result of several factors. Mainly, it was because the leaders never really believed in the idea of a United Europe and consistently tried to manage the European Union in such a way as to gather the most they could for their countries, without much regard for the collective good. In time, the higher layers of the EU fell into the hands of traitors bought by foreign powers. As a result, the attempts to create a European military force were sabotaged. During the past few decades, Europe was effectively defanged and declawed, and, to use an appropriate euphemism, "neutered" in military terms. (image below from "The Economist").
In the end, the EU went through the same sequence of failures that had doomed the previous attempts at unification. The "Brexit," the exit of the UK from the Union in 2020, was the economic equivalent of the military defeat of Napoleon at Trafalgar (1805), and of Hitler at the battle of Britain (1940). But the true disaster came with the current attempt of bankrupting Russia with economic sanctions. That was the equivalent of the disastrous dash to Moscow of Napoleon's army (1812) and of Hitler's "Operation Barbarossa" (1941). History does rhyme!
The economic war is still ongoing, but we can already say that Russia is surviving the sanctions while Europe has been badly damaging itself. No matter what the outcome of the war in Ukraine will be, Europeans now face a cold winter without a sufficient supply of fuel, and a probable economic disaster. The same outcome of Napoleon's and Hitler's campaigns -- even though not in military terms.
And now? Disasters beget disasters, it is one more rule of history. The European relentless rejection of everything that has to do with Russian culture and traditions is a human disaster that cannot be measured in economic terms. The last thing Europeans needed was an enemy on their Eastern border. Now they have created it, and they will have to live with it, just as they will have to live with the climate disaster that they lost the capability to fight. And, most likely, the idea of a United Europe is now buried forever.