"Since the end of World War II, the right to leave has been forcefully asserted, most notably in article 13 (2) of the Universal Declaration of Human Rights, and more recently in the Helsinki Declaration. Furthermore, decolonization has also entailed its extension to many millions of former colonial subjects whose movement was previously limited. Moreover, preliminary investigation suggests that this right to leave has also been broadened steadily to mean not only physical departure, but the right to relinquish one's obligations to the State of origin-that is, the right of expatriation. If the above analysis is correct, this amounts to a very extensive and unprecedented qualification of sovereignty, which is by now close to universal."