Must Read No. 1: Nicholas Eberstadt on the importance of striving for unification. North Korea’s present leadership will surely wish to ratchet up its threat to America and the Western alliance in the years ahead. It is entirely reasonable to anticipate Pyongyang’s eventual sale of nukes to hostile powers or international terror networks. The regime has already marketed abroad practically everything in its nuclear warehouse short of user-ready bombs. Even worse, there are troubling signs–repeated nuclear tests, continuing missile tests,...

South Korea is considering cutting aid to, and trade with North Korea in response to the North’s seizure of assets at Kumgang: The government is reportedly considering limiting the volume of agricultural and marine products from North Korea or tightening regulation of imports in other ways. Certain North Korean items, such as sand, hard coal and mushrooms, already require the unification minister’s approval each time someone wants to bring them into the South. Seoul could expand the number of such...