If we go back to the Cuban Missile Crisis, we find that things are not so simple, especially for American interventionists, even if they don't realize it.
The Soviets had installed nuclear missiles in Cuba that had the capability of hitting U.S. cities along the Eastern seaboard, including Washington, D.C., and New York City. The crisis lasted from October 16 through October 29, 1962.
President Kennedy demanded that the Soviets remove their nuclear missiles from Cuba and take them back to the Soviet Union. The Pentagon was exerting enormous pressure on Kennedy to immediately initiate a surprise bombing attack on the suspected missile sites, followed by a full-scale regime-change military invasion of the island. In other words, they were pressuring Kennedy to do to Cuba what Russia has done to Ukraine. In fact, the pressure they placed on Kennedy was so intense that Robert Kennedy, the president's brother, secretly told Soviet Ambassador Anatoly Dobrynin "If the situation continues much longer, the President is not sure that the military will not overthrow him and seize power."
On October 27 — two days before the crisis was resolved — Soviet leader Nikita Khrushchev wrote a letter to Kennedy stating the following:
But how are we, the Soviet Union, our Government, to assess your actions, which are expressed in the fact that you have surrounded the Soviet Union with military bases; surrounded our allies with military bases; placed military bases literally around our country; and stationed your missile armaments there? This is no secret. Responsible American personages openly declare that it is so. Your missiles are located in Britain, are located in Italy, and are aimed against us. Your missiles are located in Turkey.