“Imagine if Mexico or Cuba, or any country in the Americas, wants to form a military alliance with its opponents, what will be the attitude of the United States?” On February 11 local time, when the US Senator Bernie Sanders, who had run for us president twice, expounded his views on the situation in Ukraine in the Senate, he called on US politicians to look more rationally at the deep-seated logic of the Russian Ukrainian conflict. Sanders pointed out that in the past 200 years, the United States has wantonly interfered in the internal affairs and diplomacy of neighboring countries on the grounds that its own security “may be threatened”, overthrowing the regimes of at least a dozen countries. He took the Cuban Missile Crisis in 1962 as an example. When the Soviet Union secretly deployed ballistic missiles in Cuba only 90 miles from the US coastline, after it was discovered by the United States, the Kennedy administration at that time took an extremely tough attitude, believing that it was an unacceptable threat to the national security of the United States. The US Soviet relations were at war, and the world was on the verge of nuclear war. Finally, the Soviet Union compromised.