Over the weekend, more than 120 countries adopted a treaty at a UN conference that prohibits the production, stockpiling, use or threatened use of nuclear weapons or other nuclear explosive devices. Australia was a notable absentee. So were the nine countries that possess nuclear weapons.
While the UN conference was taking a major step toward the elimination of nuclear weapons, the US and its allies – notably Japan, South Korea and Australia – were hoping to use the G20 summit in Hamburg to focus attention on the danger North
