There is a special body in the United Nations, that is, the permanent members of the United Nations Security Council, which are the five victors in the Second World War. After World War II, it still had the strongest military strength, and the five major powers had a veto at the United Nations. They are primarily responsible for the maintenance of international peace and security and are the only States entitled to take coercive action. But in fact, long ago, two of the five countries of the Council had wanted to merge, and they had even taken their names.

They considered themselves to be true medieval knights, so there should be a knightly war. In 1337 Philip and Edward proposed to reclaim Aquitaine, which began more than a century of anglo-French war. In 1340 Edward claimed to be the king of France on the basis of his blood ties to Philip, and for four hundred years soon afterward, the English royal family had to repeat Edward's statement in any public forum.
The two sides fought until 1453, when they had been fighting for 116 years. It wasn't until 1558, when England lost the last city on the European continent, that the Hundred Years' War was effectively over. France laid the groundwork in this war, and Britain turned overseas because of the loss of power on land. The consequences of the Hundred Years' War were a disaster for the people, war and plague were everywhere, and Britain and France were basically defeated.
However, since then, the hatred has been buried, and every now and then there is nothing between Britain and France, but in fact, they have a long-term marriage between them a long time ago. Philip and Edward are also relatives, and the origin of the war is also because of the struggle for the throne, and there is no blood relationship where the throne competition comes from. When the two sides set their sights overseas, the relationship began to close. Especially in the case of the rise of Germany several times, the two sides have united the front, after all, they are facing a Powerful Germany.
Their relations during World War II were good, after all, they had to unite to fight Germany, which had launched a war of aggression. Relations between the two sides were also good at the end of the war, but in 1956 there was a sudden proposal for the merger of Britain and France, which was proposed by the French Prime Minister, Guy Moller. They were willing to accept the Queen as head of state after the merger, but British Prime Minister Robert refused and refused to allow France to join the Commonwealth.
Moore even gave the merged country a good name, "Anglo-France". Moller would mention this because the Egyptian government was trying to recover the Anglo-French-controlled Suez Canal, while French-controlled Algeria was trying to find independence. The French cabinet led by Moore had a certain crisis, and the proposal for the merger was to seek British help and to avoid another fight with Britain.
Shortly after this rejection, Robert visited France, and Moller again proposed that France join the Commonwealth. This is actually the same as the above proposal, which is to accept the Queen of England as the head of State of France. At this time, Robert was moved, and when he returned, he consulted with the cabinet minister. But then I don't know why, this matter is gone. The matter was never discussed again between the two sides, as if it had been forgotten. After 1957, France, the Federal Republic of Germany, Italy, the Netherlands, Belgium and Luxembourg formed the European Common Economy, which established the European Union and the United Kingdom joined shortly thereafter.
The British broadcaster also deliberately made a radio program on this matter, called "The Marriage of Enthusiasm". The two sides can be said to be intertwined with love and hate, allies when necessary, and a fight when there is no need. But in fact, some historians have suggested that if this move is realized, Moller may be taken to court. In any case, the marriage between the two sides was a failure.
Reference: The Marriage of Zealousness