President Trump wanted to be the hero of North Korean denuclearization. But a new report makes clear what has been known for months: His claims of victory were unwarranted.

On Monday, Beyond Parallel at the Center for Strategic and International Studies published study detailing undeclared ballistic missile activity at 13 sites among an estimated 20 maintained by the regime. The report shows in detail how North Korea is concealing its nuclear capabilities and how those capabilities might be deployed.