North Korea performed an underground nuclear blast test with approximate 20 kilotons equivalent. The news has been somewhat underreported given its importance.
The UN Security Council condemned the test and called for possible new sanctions for North Korea. The Presidency of the European Union has also condemned the test, saying that it has undermined stability on the Korean peninsula and in the region and represents a threat to international peace and security.
That is the widely expected political reaction. More importantly, new analyses appear to tell us why this test is so worrying, what it means for countries in the region, and an old one reminds us what it may mean for the economic development (i.e. deepen the crisis).