Law professor C. Raj Kumar has some ideas.

Kumar: Well, international law is that body of law which, in some ways, governs the relationship between states, and essentially, that’s now … I mean, in today’s context international law pretty much incorporates a variety of body of law, including the international trade law, intellectual property law, a wide range of issues relating to public international law, private international law. So international law is, in some ways, there are a number of aspects of the law which draws upon the domestic law itself, in some ways. So, for example, there are issues relating to conflict of law where, which jurisdictions law will become applicable in a given situation will also be governed. So, I mean, my own interest within the broader field of international law is relating to international human rights law. Now there is, essentially, human rights law could also be domestic constitutional law, which is what, in most countries, human rights is perceived to be. Now what international human rights law does is to understand what are the universally applicable set of rights on the basis of which how one’s rights and liberties can be protected and what are the institutions that could ensure that these rights are protected. In the international human rights context, for example, you inevitably look at the working of the United Nations, the working of the UN Human Rights Committee, the working of the Human Rights Council in Geneva, all these are essentially the key institutions as far as international human rights law is concerned, as well as the international trade law, you already much know the working of the WTO, the World Trade Organization, is the key organization or institution which will govern it.