N.K.'s New Missile Speeds Up Threat of Submarine Strike

The video discusses North Korea's advancements in missile technology, including a new submarine-launched missile with a range of over 500 kilometers. Despite limited submarine capabilities, these developments pose a new threat to the US and its allies. North Korea has also tested various weapons, including long-range cruise missiles, ballistic missiles launched from trains, and a hypersonic glide vehicle. The US and Japan have condemned these tests as violations of UN sanctions, while South Korea expresses concern but maintains a softer diplomatic approach.

What has been the reaction of the US and its allies to North Korea's recent missile tests?

What concerns does South Korea have regarding North Korea's missile developments?