Welcome to the Club: South Korea Now has a Submarine Launched Ballistic Missile

[soryang]

Welcome to the Club: South Korea Now has a Submarine Launched Ballistic Missile
In addition to the new SLBM in the Republic of Korea Navy service, Seoul also has a brand-new submarine to boot.
The National Interest Sep 9
by Caleb Larson

South Korea has reportedly test-fired a new, domestically designed and built submarine-launched ballistic missile. Yonhap, a South Korean news agency, reported that the Agency for Defense Development, a defense technology research and development group, carried out “underwater ejection tests” from a Dosan Ahn Chang-ho submarine following successful underwater launches from a barge earlier last month...

...The missile in question is said to be a variant of South Korea’s Hyunmoo-2B, a solid-fueled, ballistic missile with a range of three hundred to five hundred kilometers depending on payload configuration. The new SLBM is purportedly called Hyunmoo 4-4...

https://nationalinterest.org/blog/korea-watch/welcome-club-south-korea-now-has-submarine-launched-ballistic-missile-193297

Some observers criticize the "ambiguity" of a ballistic missile launch from a conventional sub platform. Is it armed with a conventional warhead or nuke? Not convinced that it is any more ambiguous than cruise missile armed platforms. Are land based Hyun-moo 4's not ambiguous as well?