WORLD..North Korea fires submarine-launched ballistic missile into waters off Japan..

North Korea has fired a submarine-launched ballistic missile into waters off the coast of Japan, South Korea’s military has said.

The launch comes weeks after South Korea unveiled its own such weapon.

Pyongyang unveiled the “new” type of submarine-launched missile in January, describing it as “the world’s most powerful weapon”.

It comes as South Korea, Japan and US intelligence chiefs reportedly meet in Seoul to discuss North Korea.

In recent weeks, Pyongyang has embarked on a flurry of tests of what it claims to be hypersonic and long-range cruise missiles, and anti-aircraft weapons.

Some of these tests violate strict international sanctions.