That is the reason that you see many structures or buildings like the one at the end of this post.
Therefore, Cuba has to spend much of its money resources on:
1) the military to prevent and defeat things like the 1961 Bay of Pigs adventure, initiated by the Yankees from the north.
2) protect the island from threats from within, which have always been financed and directed by the Yankees from north.
I applaud the Ministry of the Interior and the CDR's for the great job that they do.
One day, maybe the USA will not ruled by insane and money hungry leaders.