Ian Bremmer: North Korea won't denuclearize
North Korean leader Kim Jong Un and South Korean president Moon Jae-In will hold historic talks this week. President Trump and Kim Jong Un are also expected to hold a summit soon. The North says it will suspend nuclear and intercontinental ballistic missile tests as well as close its nuclear testing facility. CBS News senior global affairs contributor and Eurasia Group president Ian Bremmer takes CBSN through the latest.