I think that while the steps made recently at the peace summit are very good first steps (and very big news in general) towards a lasting peace on the Korean peninsula, there's still plenty of reasons to be hesitant towards thinking that this will lead to a total, lasting peace. While a lot of nice things were said at the summit, the means in which denuclearization will be carried out remains to be seen. North Korea hasn't already abandoned anything - they've simply agreed to "
agreed to carry out their respective roles and responsibilities." What that means or whether or not it will actually lead to legitimate denuclearization remains to be seen, especially considering that N Korea hasn't followed through on their pledges before. For my part, I'm genuinely hopeful that N Korea will follow through on its promises and that we do see a lasting peace (whether that leads to a reunification on the peninsula or not). But I think it'll take a lot of time and effort to get there and I wouldn't blame anyone for being skeptical of N Korea's claims. that said, it definitely seems like a good start...
If North Korea really is as insignificant as you claim, why are China and Japan paying any attention to the issue of N Korean denuclearization? The respective leaders of China and Japan certainly seem to think N Korea is important enough to discuss with each other.. Plenty of world leaders seem to care about N Korea. Why is anyone paying attention to them if they are such a non-issue as you state?