President Donald Trump’s inconsistent messaging on North Korea severely undermined the administration’s "maximum pressure" strategy to convince Kim Jong Un to denuclearize, former National Security Adviser H.R. McMaster claims in a new book that seeks to show what a second Trump term would look like.

In “At War with Ourselves,” Trump’s top security adviser from 2017 to 2018 shines a light on internal conflicts and strategic challenges that the administration faced during a critical period in U.S.-North Korea ties.