Jacob Weisberg talks to Victor Cha, the former Director for Asian Affairs at the White House National Security Council under George W. Bush, about why there are no good options when it comes to North Korea.Slate Plus listeners, stick around for an extra segment where Jacob talks to David Graham of The Atlantic about Donald Trump's flip-flops this week. To sign up for Slate Plus, go to slate.com/trumpcastplus.Trumpcast is brought to you by Legacybox, the simple and affordable way to get your recorded moments digitally preserved on DVD or thumb drive. For a limited time, go to Legacybox.com/trumpcastto get a 40 percent discount on your order.Learn more about your ad choices. Visit megaphone.fm/adchoices