It is possible that North Korean dictator Kim Jong-un is suddenly “committed to denuclearization,” as South Korean National Security Adviser Chung Eui-yong claimed in comments to the press at the White House Thursday evening.It's further possible that the result of a one-on-one meeting between Donald Trump and Kim Jong-un will “achieve permanent denuclearization,” as he predicted.And it's possible that Trump's “leadership and his maximum pressure policy” have in fact led Kim Jong-un to so fear for his survival that he's decided to give up the nuclear program his country has suffered decades to obtain—and to do so just as he's on the verge of accomplishing the long-held objectives of his predecessors.It's possible we'll look back on this development in two years, or five years, and view it as the moment the North Koreans finally agreed to do the one thing they've been determined not to do, at tremendous cost, for two generations. All of this, I suppose, is possible.