This report discusses how as North Korea has accelerated its missile and nuclear programs in spite of international sanctions, Congress and the Trump Administration have elevated North Korea to a top U.S. foreign policy priority. Legislation such as the North Korea Sanctions and Policy Enhancement Act of 2016 (P.L. 114-122) and international sanctions imposed by the United Nations Security Council have focused on North Korea's WMD and ballistic missile programs and human rights abuses. North Korea's cyberattacks have the potential not only to disrupt international commerce, but to direct resources to its clandestine weapons and delivery system programs, potentially enhancing its ability to evade international sanctions. This report will provide a brief summary of what unclassified open-source reporting has revealed about the secretive program, introduce four case studies in which North Korean operators are suspected of having perpetrated malicious operations, and provide an overview of the international finance messaging service that these hackers may be exploiting.

This report presents background information and discusses potential issues for Congress relating to U.S. ballistic missile defense (BMD) efforts in the Asia-Pacific region. These efforts pose several potential policy, funding, and oversight issues for Congress. Decisions that Congress makes on these issues could affect U.S. defense funding requirements and military capabilities, and U.S. relations with countries in the Asia Pacific region, including China, Japan, South Korea, North Korea, and Australia.

This report summarizes what is known from open sources about the North Korean nuclear weapons program — including weapons-usable fissile material and warhead estimates — and assesses current developments in achieving denuclearization.

This report discusses the Resolution 2270 adopted by United Nations Security Council (UNSCR 2270), imposing new sanctions on North Korea in response to the country's fourth nuclear test.

This report discusses sanctions on North Korea in response to the country's fourth nuclear test and China's imports of coal from North Korea.