North Korea says it has tested a new torpedo system that uses artificial intelligence for target detection and guidance North Korea has been ramping up weapons demonstrations in recent weeks, including conducting its first underwater-launched missile tests in nearly three years Key points and original sources are listed below.

• North Korea says it has tested a new torpedo system that uses artificial intelligence for target detection and guidanceS1

• North Korea has been ramping up weapons demonstrations in recent weeks, including conducting its first underwater-launched missile tests in nearly three yearsS2

• The announcement came days after Pyongyang said it had test-fired two types of cruise missiles from a submarine.S3