This report describes the rationales for including North Korea on the terrorism list from 1987- 2008, for North Korea's delisting in 2008, and the debate in 2010 over whether to re-list North Korea.

This report discusses questions about North Korea's relationship with terrorists, state sponsors of terrorism, and terrorist attacks as well as the possible implications on re-designating North Korea in the list of sponsors of terrorism.

North Korea has presented one of the most vexing and persistent problems in U.S. foreign policy in the post-Cold War period. The United States has never had formal diplomatic relations with the Democratic People's Republic of Korea (the official name for North Korea), although contact at a lower level has ebbed and flowed over the years. Negotiations over North Korea's nuclear weapons program have occupied the past three U.S. administrations, even as some analysts anticipated a collapse of the isolated authoritarian regime. North Korea has been the recipient of over $1 billion in U.S. aid (though none since 2009) and the target of dozens of U.S. sanctions. This report covers the overall U.S.-North Korea relationship, with an emphasis on nuclear diplomacy.

This report discusses North Korea's second nuclear test and the implications of U.N. Security Council Resolution 1874. The resolution puts in place a series of sanctions on North Korea's arms sales, luxury goods, and financial transactions related to its weapons programs, and calls upon states to inspect North Korean vessels suspected of carrying such shipments.

This report examines the economic side of U.S. leverage with North Korea and reviews U.S. policy and legislation. The security side of U.S.-DPRK relations is addressed in other CRS reports.

This report outlines the various elements of the bilateral relations between both the U.S. and North Korea and the U.S. and South Korea, especially nuclear nonproliferation agreements, nuclear dismantlement policies, and U.S. military troop withdrawals from South Korea.

This report describes the organizations controlling research and development (R&D) on nuclear weapons in several nations, and presents a brief history of the organizations controlling nuclear weapons R&D in the United States. It discusses whether these organizations are civilian or military, though in many nations the lines between civilian and military are blurred.

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 provides a brief survey of China-North Korea relations, assesses China's objectives and actions, and raises policy issues for the United States.

This report discusses the implications of North Korea's May 25, 2009, underground nuclear test, related issues such as the the Comprehensive Nuclear-Test-Ban Treaty (CTBT), containment of radioactive materials, and other concerns for Congress, such as improving nuclear monitoring capability.

This report discusses the economic sanctions the United States imposes on North Korea for activities related to weapons proliferation, destabilizing the region, anti-terrorism, and undemocratic governance.

This report provides background information on the nuclear negotiations over North Korea's nuclear weapons program that began in the early 1990s under the Clinton Administration. It also provides information on other concerns that the U.S. has with North Korea, and discusses U.S. engagement activities with North Korea.

This report summarizes U.S. assistance to the Democratic People's Republic of North Korea (DPRK, also known as North Korea). It will be updated periodically to track changes in U.S. provision of aid to North Korea.

This report provides background information on the negotiations over North Korea's nuclear weapons program that began in the early 1990s under the Clinton Administration. As U.S. policy toward Pyongyang evolved through the George W. Bush and Obama presidencies, the negotiations moved from mostly bilateral to the multilateral Six-Party Talks (made up of China, Japan, Russia, North Korea, South Korea, and the United States).

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 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 summarizes U.S. energy, food and medical assistance to the Democratic People's Republic of North Korea (DPRK, also known as North Korea).

This report provides background information on the negotiations over North Korea's nuclear weapons program that began in the early 1990s under the Clinton Administration. As U.S. policy toward Pyongyang evolved through the George W. Bush presidency and into the Obama Administration, the negotiations moved from mostly bilateral to the multilateral Six-Party Talks (made up of China, Japan, Russia, North Korea, South Korea, and the United States).

This report describes the organizations controlling research and development (R&D) on nuclear weapons (i.e., nuclear explosive devices, as distinct from the bombers and missiles that carry them) in these nations, and presents a brief history of the organizations controlling nuclear weapons R&D in the United States. It discusses whether these organizations are civilian or military, though in many nations the lines between civilian and military are blurred.

This report describes the key elements of a nuclear weapons program; explains the available information regarding cooperation among Iran, North Korea, and Syria on ballistic missiles and nuclear technology; and discusses some specific issues for Congress.

Asian Pacific Americans have served in both houses of Congress representing California, Hawaii, Louisiana, Oregon, Virginia, American Samoa, and Guam. They have served in leadership positions, including committee and subcommittee chairmanships. This report presents information on Senators, Representatives, and Delegates, including party affiliations, length and dates of service, and committee assignments.

This report discusses the North Korean nuclear threat and possible military options the U.S. could use to reduce or eliminate the threat. The report begins with a brief overview of the situation, nuclear capabilities of North Korea, and effects military action would have on the region and its stability. Seven military related options are discussed along with possible issues of interest to Congress.

This report provides background information on the deployment of nuclear weapon systems in South Korea in the past, explores the options that might be available for the redeployment of nuclear weapons to South Korea now to deter the North Korean threat, and discusses the potential implications of doing so for South Korea, North Korea, Japan, and the U.S.

This report discusses China's suspension of coal trade with North Korea for the remainder of 2017 which keeps China in compliance with an UN agreement to limit coal buying from North Korea that was implemented in November 2016 in response to continued nuclear tests by North Korea. Coal's value as an export to North Korea, China's trade with North Korea, quantities of coal and its value that was imported into China in 2016 and 2017, and possible reasons and implications for China's decision are discussed.