“Bernie Sanders on how to avoid war with North Korea” https://www.theguardian.com/commentisfree/2017/jul/19/bernie-sanders-show-podcast-william-j-perry-north-korea
Perry We need to offer both carrots and sticks.
We and our allies, Japan and South Korea, have many carrots to offer. South Korea and Japan have both offered economic incentives in the past, and would be willing to offer them again. The US could offer security assurances. That doesn’t cost anything, but it’s something we could offer.
The sticks would have to come from China, which would be cutting off the trade they have. They would not do that by themselves. As part of a package, we might be able to persuade them to do it.