Hon PHIL TWYFORD (Minister for Disarmament and Arms Control): I've seen reports on the first meeting of States parties to the Treaty on the Prohibition of Nuclear Weapons (TPNW), to be held in Vienna on 21 to 23 June, which I'll be travelling to next week as the head of New Zealand's delegation. The TPNW, which entered force last year, is a milestone in international disarmament efforts. It expressly forbids States to develop, test, produce, acquire, possess, stockpile, use, or threaten to use nuclear weapons. Eighty-nine States have now signed or ratified the treaty, but we still live in a world where 13,000 nuclear warheads exist, and States like Russia and North Korea continue to threaten to wage nuclear war. That's why it's so important that New Zealand continues to push strongly to ban the bomb. We are well known as a principled voice in international disarmament, something which has been at the heart of our foreign policy and also who we are as a country.