In the aftermath of North Korea’s nuclear test, 2016 has already begun with a new crisis on the Korean peninsula.

A good stretch of optimism in inter-Korean relations ended in December, even before tensions rose in early January 2016 with North Korea’s fourth nuclear test.

With the fourth test now behind us, the next question becomes: How should the international community react to the event?

In the aftermath of what appears to be a fourth nuclear test by North Korea the question becomes, what comes next?

As we look back at the events that helped to shape the Korean peninsula in 2015, it is also an opportunity to review the events we highlighted on The Peninsula in our annual 10 Issues to Watch For on The Korean Peninsula in 2015 blog and the key events that we did not predict.

In discussions of Korea’s possible reunification, observers often cite the German unification and integration process - but what about Ireland?