Alexandra Petri: Why, Kim Jong Un, why?

Oh no! Not the summit!Why, Kim Jong Un, why would you do this?I had already purchased my commemorative coin, but now what it commemorates is ... nothing.Leader Kim, you have ruined the world’s best hope.Donald Trump had high hopes for the summit. It would have been perfect. We were going to emerge from that summit with not just peace in our time, but peace for all time. Donald Trump is, as he has repeatedly stated, a masterful diplomat — like a Jared Kushner but with decades of exper