If you control oil, what do you control? If you control the grain, what do you control?
Whoever controls oil controls all countries; Whoever controls food controls all mankind. In the 1970s, the famous words of American Secretary of State Henry Kissinger, as his core idea, made a comprehensive analysis of how the United States controlled global politics, economy, military affairs, energy, food, culture and diplomacy, and even led to more deduction: whoever controls oil controls the world; Whoever controls food controls human beings; Whoever controls the minerals will control the earth.