World War II: Yamamoto as saying: “You cannot invade mainland United States. There would be a rifle behind each blade of grass.” (a quote that’s been challenged for accuracy but not disproven)
Cold War KGB assessment: Soviet Union Intelligence Services were increasingly concerned about a West nuclear first strike against the Soviet Union initiating Project RYAN, separate intelligence documents collected after the Soviet collapse suggested that an invasion of the U.S. was not practical because of the amount of firearms in civilian hands.
Communist China’s advice to the United States – keep guns out of civilians hands: SHANGHAI (Reuters) FEBRUARY 22, 2018 – “The United States should learn from China and “genuinely” protect human rights by restricting gun ownership, an editorial in a widely read state-run Chinese newspaper.”
WHY WE MAY WAN’T TO PRESERVE THE 2nd Amendment