(LEAD) N. Korea reports test-firing of 'tactical' ballistic missile to improve weapons systems

AI Summary

North Korea reported test-firing a tactical ballistic missile as part of efforts to improve its weapons systems. The report was filed from Seoul and describes a military weapons test, though further details are not provided in the supplied text.

SEOUL, Oct. 13 (Yonhap) -- North Korea has test-fired a tactical ballistic missi...