The path forward for dealing with North Korea
Korean unification: Prospect and global implications
KDI-Brookings Workshop on the Productivity Puzzle
[On President Moon Jae-in's definition of a 'red line' for North Korea] The only way we will know definitively that North Korea actually has a nuclear-armed missile that works is to demonstrate this capability...It would be considered an act of war which others would see as justifying preemption, and retaliation if preemption or missile defense did not work.
[Kim Jong Un] wants to be validated. He presides over one of the most misbegotten regimes in the world that has an economy one fortieth the size of South Korea's. He is trying to claim that he is now on a level playing field with the most powerful state in the world, so he does this through an over-commitment to military programs.
[U.S. military capabilities in the Pacific are] very imposing, very impressive [and are intended] to deter the North from any kind of potential actions. But if the North were to act, the U.S...would have to deploy far more to the peninsula and the region as quickly as possible.