6. Nuclear weapons ban talks begin in NY
Negotiations on a treaty to legally ban nuclear weapons began at the UN on Monday without the participation of nuclear powers.
More than 100 countries are taking part in the first round of talks over 5 days.
Delegates and an atomic bombing survivor delivered speeches on the opening day.
Japan's ambassador in charge of disarmament, Nobushige Takamizawa, announced that Japan will not join the talks.
He said that nuclear powers and non-nuclear countries should cooperate on disarmament.
He said it's difficult for Japan to participate in the talks in a constructive and sincere manner.
Ambassadors from more than 20 countries, including the US, Britain, France and South Korea, issued a joint statement opposing a nuclear arms ban treaty.
US Ambassador Nikki Haley questioned if those at the conference really understand the security threats facing the world.
Participating countries and atomic bombing survivors have criticized Japan, the only country to have experienced atomic bombings, for opposing a treaty and not joining the negotiations.