But when is the country the same as made the treaty? Given time all countries change government structures and landmass quite heavily. Or in another case if a

But when is the country the same as made the treaty? Given time all countries change government structures and landmass quite heavily. Or in another case if a country is ruled by a genocidal dictatorship and there is a rebellion, should the new government be bound by the treaties made by the dictator? What if that dictator had been installed by a foriegn government?