Hong Kong's electoral standoff: the bigger picture
Tony Carty says a chief executive nomination process that was not sympathetic to China would be a strange disregard of national interest and security in a world of heightened tensions

Article 25 of the International Covenant on Civil and Political Rights provides that every citizen shall have the right to stand for election and to vote without unreasonable restrictions. In the case of Hong Kong, there is an original UK reservation to the applicability of the article to the territory, continued by Beijing.
The arguments around the legal effectiveness of this reservation are well known and complex. What has still to be recalled is that international law, of which the covenant is a part, remains the law among sovereign states. It regulates the relations of states on a consensual basis.
Generally, this law does not try to regulate the birth or constitution of states or their internal affairs, simply because this is beyond the physical capacity and also outside the interest of most states. At the same time, there is no international judicial authority or legal sanctioning framework, whereby states impose on one another legal duties with respect to one another's internal affairs.
Also, as a matter of international relations theory, the world community does not constitute the shape of individual national communities; they constitute themselves and then come to face one another at the international - that is, inter-state - level. Disputes and conflicts shape individual countries' relations with one another, but there is no overwhelming global power that shapes all the world's states systematically according to any particular model.