1in March, 986, Reagan proposed in his speech entitled "Freedom, Regional Security and Global Peace" to launch a low-intensity war in the third world, conduct selective military intervention, launch a full-scale war through political, economic, diplomatic and psychological means, prevent regional conflicts from expanding, resist the expansion of the Soviet Union, and push back the political and military progress made by the Soviet Union in the third world. High-intensity war is a desperate battle between the two sides, with heavy casualties. For example, Verdun in World War I, Iwo Jima in World War II, and Vietnam's self-defense counterattack in China. Take Iwo Jima as an example. It took the US military more than ten days to conquer this small island which is eight kilometers long and four kilometers wide. Six thousand people died and more than ten thousand people were injured. 20-day casualties100,000, with an average of 5,000 per day. This is more than the sum of single-day casualties in many battlefields on the eastern front of World War II!