The world today as a whole is relatively peaceful and stable, but local wars have never stopped. War has never been won or lost, it has brought people only endless harm and pain, so no one wants to start a war, they all yearn for peace.
But there are always some people with ill intentions who try to invade other countries and compete for property and land, and there have been many such wars in history, three of which are difficult to subdue, the United States has subdued one, China has subdued one, and there is still one that no country dares to attack.
Japan is a small island nation on the west coast of the Pacific Ocean, with a total area of 378,000 square kilometers. Although it is a small country with a small land area, a small population and limited resources, it has a strong sense of crisis and has always been eager to open up territory. Germany was inferior to Britain in World War I, so Japan and Britain sided and began to declare war on Germany, preparing to expand their power in East Asia, and after the end of World War I, they paid significantly less than they got. During World War II, Japan underwent the Meiji Restoration and quickly moved towards the ranks of great powers. Compared with the four major powers of Britain, the United States, and the Soviet Union, Japan has a big gap, but for Asia, it is the only country that can mass-produce advanced weapons such as aircraft carriers, tanks and aircraft.
Japan became more and more arrogant and began to attack the Soviet Union, but the gap in strength was too large, and it turned its eyes on the United States and sneaked into Pearl Harbor. As a major power, Japan bullied its own head, naturally very angry, so it dropped two powerful atomic bombs on Japan, the house was destroyed, the casualties were heavy, which gave Japan a heavy blow, Japan was no longer able to seek expansion, and the obedience of the United States was incomparable.
After the end of World War II, in order to balance the world pattern, the United States launched a war in Vietnam, but finally failed, which was the largest number of American participants in the war after World War II, which had a profound impact on Asia.
After the end of the Vietnam War, a dispute arose with our country, and in the end, it took our country a month to subdue Vietnam.
And there is such a country in the world that has never been invaded and has always adhered to a neutral policy, that is, Switzerland, known as the "roof of Europe".
Switzerland is located in Central Europe, the whole country is dominated by mountains and plateaus, is a natural protective barrier, can be a good barrier to the invaders. Historically, the cavalry of the Charles Empire and the Germanic tribes of the north have attacked Switzerland, but it is difficult to gallop here, and finally failed.
Switzerland's national defense is different from other countries, advocating that all people are soldiers, ordinary people have undergone formal military training, and in the event of war, every citizen can fight on the battlefield.
For a variety of reasons, no country in the world dared to invade Switzerland and become a clear stream.