The UN will take action against North Korea. It believes North Korea tested a hydrogen bomb. A hydrogen bomb is a lot more powerful than the atomic bombs of World War II. The UN said the test is a danger to world peace and security. The UN did not say what action it will take against North Korea.
The USA does not think North Korea tested a hydrogen bomb. The USA and South Korea said the test was dangerous. Japan wants the UN to act quickly so the UN keeps its strong image. China said North Korea must keep its promises to stop nuclear testing. It also said North Korea must not make this situation worse.