Hon PHIL TWYFORD (Minister for Disarmament and Arms Control): I recently returned from the review conference in New York of the nuclear non-proliferation treaty (NPT). Our diplomats there are working hard right now for a successful outcome. As the Prime Minister said in her Guardian op-ed today: right now, nuclear catastrophe is not an abstract threat; it's a real-world risk. That's why New Zealand calls on the nuclear-weapon States—the US, China, Russia, France, and the UK—to commit to new disarmament and arms control negotiations. That's the measure of success.