"...Within international rights Puerto Rico was a sovereign nation on the date in which the Treaty of Paris was drawn up, and Spain could neither give away Puerto Rico nor could the US annex it, nor the entire world disown it. This sovereignty is irrevocable and when the United States, through its cannons, forced the Spanish plenipotentiaries to sign the so-called cession of Puerto Rico it was committing a typical North American stick-up. And this co-action against the Spanish had no part of the Spanish American war, it was never a belligerent against the US or anyone else, and here the Yanquis have been at war for 52 years against the Puerto Rican nation, and have never acquired the right of anything in PR, nor is there any legal government in PR, and this is uncontestable, one would have to knock to pieces all the international rights of the world, all political rights, to validate the invasion of the US in PR and the present military occupation of our national territory."
January 1, 1970
https://en.wikiquote.org/wiki/Pedro_Albizu_Campos