Ahead of the referendum, Argentine President Cristina Fernandez de Kirchner had said the inhabitants' wishes were not relevant in what is a territorial issue.
To the contrary, its the only thing which is relevant. The UN recognises the principle of self-determination, and its simply unthinkable in the modern era for a democratic country to legitimately claim ownership of a territory whose people do not want to be governed in that way.
Of course, exactly the same principle applies to Scotland...