The reality is that most countries have special forces and all special forces get to do shitty jobs and I include our own special forces in that. But the College focuses more on the strategic level and the military/civil interface in preparing students for higher command appointments in their respective services. And much is gained by having students from other countries. They learn from us and vice versa acknowledging that we don't live in a perfect world.
Of course the Greens would prefer that the military was restricted to peace keeping in a benign environment where conflict was resolved by everyone gathering together and singing 'Kumbaya'. I suspect that institutions such as the College would be at risk in their brave new world.
So I say to the Greens, at least be consistent. The College alumni includes graduates from the Peoples Republic of China as well as Malaysia and Vietnam all of whom, you can argue, have less than perfect records on human rights. Do you want to ban those countries too?
And why just the NZDF Command and Staff College? Surely consistency would suggest that students from those countries should be banned from accessing New Zealand Universities as well. In the Greens lexicon selective morality rules ok.
Disclosure ... I am a member of the College alumni (when it was the RNZAF Command & Staff College). My class included both Singaporeans and Malaysians including Squadron Leader later General Dato' Sri Sulieman Mahmud, Chief of the Royal Malaysian Air Force. From what I remember some of our time was spent in studying how to take out Jakarta Airport (Halim Air Base) in high and low level bombing runs. How the worm turns. Them wuz the daze.