The Containment Strategy was the principal strategy adopted by the US in foreign policy matters during the Cold War era.
It aimed to stop the expansion of the national enemy: communism, and in turn, of the URSS and the countries under its influence, that were denominated the Eastern Bloc. It consisted on responding to any attempt of expansion performed by the URSS, seeking to spread communism in Eastern Europe, Korea, China Africa, Vietnam, and Latin America.
In the case of Mexican History, it was Lazaro Cárdenas.
He claimed he was acting to protect the public.
The Little Rock School was the center of a highly popular crisis in Little Rock - Arkansas. There was a group called Little Rock Nine that consisted of nine African Americans students who wanted to enter the school which was racially segregated.
After the US Supreme Court decision of calling that all laws that segregated schools were unconstitutional, the high school decided to make a plan to integrate African American students. Many segregationist councils threatened to block the entering of the black students. Governor of Arkansas Orval Faubus decided then to deploy the Arkansas National Guard, and he justified his action by saying that if he didn’t call the national guard people would get hurt.