In diplomacy, there are no eternal friends, only eternal interests, because the relationship between countries is not like there will be emotional intervention between people and people, but more of a hostility or cooperation based on national interests. Therefore, it is not unusual for two countries that once stood on the same front to turn against each other later, or for two countries that were once incompatible to reach cooperation, which is a change determined by the nature of the country itself.
China and the Soviet Union
Since the founding of New China, our relations with the Soviet Union have gone through several stages of change. The Soviet Union was one of the world's superpowers at that time and our neighbor, and the relationship between us and the Soviet Union had a considerable impact on the whole world situation. When New China was just founded, the Soviet Union was our "big brother", which provided a lot of help to the new China that was in ruins at that time, for example, many of our factories were built with the help of the Soviet Union. However, not long after such a "honeymoon period", the ambitions of the Soviet Union became more and more ambitious, and it had already damaged the sovereignty and interests of our country.
Our country is an independent country that does not allow any country to be above our sovereignty, so relations with the Soviet Union are also deadlocked. Although our country has had a difficult time in the face of blockades by various major powers, we have finally survived with our tenacious will and concerted efforts. However, the Soviet Union did not give up, and there was a battle with our army on Zhenbao Island, and after being repelled, it also deployed 1.1 million troops on the Sino-Soviet border in 1969, gathering tens of thousands of tanks, and the war seemed to be on the verge of breaking out. In the end, however, the Soviet Union did not dare to go south to attack China.
Why didn't the Soviet Union send troops?
The Soviet Union was a superpower at that time, and only the national strength of the United States in the world could compete with the Soviet Union, so why did the Soviet Union not send troops in the end? There are three main reasons for this. First, China already had atomic and hydrogen bombs at that time, and even if other troops were not equipped with the Soviet Union, we could still use nuclear weapons to defend ourselves. Once it becomes a nuclear war, then the situation will become unmanageable, and even the Soviet Union will not dare to risk nuclear war. The second point is that the Soviet Union has seen the strength of the Chinese army in the Korean War and does not dare to say that it can win 100%.
In the view of the Soviet Union, the United States, which is also a superpower, cannot take advantage of the Chinese army, and of course it will not have a 100% grasp of itself, not to mention that the strategic depth in China should not be underestimated, and the front line is too long to be unfavorable to itself. The last point is of course the envy of the United States, when the United States and the Soviet Union were still in a "cold war" state, if the Soviet Union concentrated its forces in East Asia, then the United States is likely to launch an attack on the Soviet Union from Europe, the Soviet Union will face the dilemma of being attacked by the enemy on its back, so it does not dare to really provoke war, and finally chooses to withdraw.
From this incident, we can also see that if we want to gain real respect in the international community, the most important thing is to have enough strength. Imagine that China did not have nuclear weapons at that time, or its military strength was not so strong, and the Soviet Union would still retreat? This is entirely the peace we have earned for ourselves, and we must cherish it now.