Perspective with Heather du Plessis-Allan: Did China break any rules with their nuclear missile test?

Let's talk about the Chinese test of that nuclear-capable missile. More specifically, let's talk about New Zealand's response to it, which was quite full-throated in its criticism of China.

I find myself unable to get as worked up about this as Winston Peters because, please correct me if I'm wrong, I can't see that China has actually broken any rules here. Before firing the missile, China alerted New Zealand, Australia and Japan, as required under international regulations governing tests of this nature.