Several former Castro’s government officials such as Cuba’s former Ambassador to the United Nations, Alcibiades Hidalgo and ex diplomat Juan Antonio Blanco, who worked in the Central Committee of the Cuban Communist Party, have explained how Cuban leaders need enmity with the United States to derive their internal legitimacy and protect their authoritarian privileges. According to these former officials, every time there was a chance of lifting the embargo, Fidel Castro did something to keep it: Angola (1975), Ethiopia (1977), and the shoot down of the Brothers to the Rescue planes in 1996. 

Those views are an exaggeration of Cuba’s policy towards the United States but I don’t dismiss their evidences. For some in the Cuban leadership, “anti-imperialism”, manifested at its worst as “anti-Americanism”, is central to their identity. Cuban nationalists have a long list of historic complaints and grievances against U.S. interventionism, from the exclusion of the Paris Treaty in 1898 and the Platt Amendment in 1902 to the Helms-Burton Act in 1996.