Essentially, it goes back to what the test is in the legislation itself. It could be human rights abuses. It could be violations of international humanitarian law. It could be a number of different elements that allow you to reach that point of it being a “grave breach of international peace and security”. I wouldn't want to say that there's any one specific element that will necessarily trigger that, whether it's your example of abuses against whistle-blowers or something else. It really depends on that entire context. It's very hard to take one specific aspect out.
On October 17th, 2016. See this statement in context.