Hiroshima mayor is concerned that countries believe nuclear weapons are essential for national defence

# Hiroshima mayor Kazumi Matsui has warned that the Non-Proliferation of Nuclear Weapons Treaty is on the brink of dysfunction. Today marks 80 years since the US dropped an atomic bomb on Hiroshima in Japan, killing more than 200-thousand people. Over 70 countries have ratified the treaty, which aims to prevent the spread of nuclear weapons and promote the peaceful use of nuclear energy. However, the US and Russia have opposed it. Matsui expressed concern at the idea that some countries believe nuclear weapons are essential for national defence.