Nuclear Issues

822 Items

People practice combat skills in urban areas during a training course for national resistance of the Municipal Guard near Kyiv, Ukraine, on Jan. 19, 2024.

AP Photo/Evgeniy Maloletka

Journal Article - International Security

A “Nuclear Umbrella” for Ukraine? Precedents and Possibilities for Postwar European Security

| Winter 2023/24

Europe after the Russo-Ukrainian War must develop a new security structure to defend against any Russian aggression. The safest option is a non-offensive, confidence-building defense. This option includes proposals such as the “spider in the web” strategy and the “porcupine” strategy to provide for European security in a region threatened by Russian expansion—without relying on the threat of nuclear war. 

A huge mushroom cloud rises above Bikini atoll in the Marshall Islands following an atomic test blast.

AP Photo

Journal Article - Quarterly Journal: International Security

The Nuclear Balance Is What States Make of It

    Author:
  • David C. Logan
| Spring 2022

Recent quantitative scholarship uses warhead counts to examine whether nuclear superiority offers political or military benefits beyond having a secure second-strike capability. These analyses overlook other elements of a state’s nuclear capability such as state perceptions and beliefs.

North Korean leader Kim Jong Un, second from right, inspects the preparation of the launch of a Hwasong-14 ICBM in North Korea on July 4, 2017.

AP Photo

Journal Article - Quarterly Journal: International Security

Defending the United States: Revisiting National Missile Defense against North Korea

| Winter 2021/22

The costly Ground-based Midcourse Defense system remains unproven and unreliable in deterring North Korea’s threat to use intercontinental ballistic missiles. An airborne boost-phase intercept system may offer an alternative defense against North Korea without threatening Russian or Chinese deterrents.

South Korean army's K-55 self-propelled artillery vehicle is unloaded from a barge during a Combined Joint Logistics Over-the-Shore exercise of U.S. and South Korea Combined Forces Command at the Anmyeon beach in Taean, South Korea, Monday, July 6, 2015. The U.S. and South Korean military joint exercise are held from June 29to July 9.

AP Photo/Lee Jin-man

Analysis & Opinions - War on the Rocks

South Korea, Conventional Capabilities, and the Future of the Korean Peninsula

    Authors:
  • Ian Bowers
  • Henrik Stålhane Hiim
| Feb. 11, 2021

South Korea's conventional counterforce and countervalue strategy is meant to hold North Korea’s nuclear weapons infrastructure, as well as its leadership, at risk independently from the United States. This strategy is often overlooked by policymakers and analysts, who are more focused on discussing Kim Jong Un’s pledges to develop new missile and nuclear capabilities and how the new administration of President Joe Biden should approach the nuclear issue. However, as we highlight in a new article in International Security, South Korea’s strategy increasingly has a determining impact on strategic stability on the Korean Peninsula and on prospects for denuclearization.

In this Monday, Sept. 4, 2017 file photo provided by South Korea Defense Ministry, South Korea's Hyunmoo II ballistic missile is fired during an exercise at an undisclosed location in South Korea. South Korean warships have conducted live-fire exercises at sea. The drills Tuesday, Sept. 5, mark the second-straight day of military swagger from a nation still rattled by the North's biggest-ever nuclear test.

South Korea Defense Ministry via AP

Journal Article - Quarterly Journal: International Security

Conventional Counterforce Dilemmas: South Korea's Deterrence Strategy and Stability on the Korean Peninsula

    Authors:
  • Ian Bowers
  • Henrik Stålhane Hiim
| Winter 2020/21

South Korea’s conventional counterforce and countervalue strategy is a manifestation of its uncertainties over the reliability of the U.S. alliance. This strategy has significant implications for strategic stability and the potential for denuclearization on the Korean Peninsula.    

In this file photo taken April 3, 2008, the control panel for Hanford nuclear reservation's famous B Reactor is shown in Richland, Wash. The B Reactor, the world's first full-sized reactor, will be part of the Manhattan Project National Historical Park, the nation's newest national park. (AP Photo/Ted S. Warren, File)

AP Photo/Ted S. Warren

Journal Article - Quarterly Journal: International Security

Death Dust: The Little-Known Story of U.S. and Soviet Pursuit of Radiological Weapons

    Authors:
  • Samuel Meyer
  • Sarah Bidgood
  • William C. Potter
| Fall 2020

A comparative analysis of the United States’ and the Soviet Union’s previously underexplored radiological weapons programs identifies the drivers behind their rise and demise. The findings of this analysis illuminate the factors likely to affect the pursuit of radiological weapons by other states in the future.

Military helicopters fly over the training ground during strategic command and staff exercises Center-2019 at Donguz shooting range near Orenburg, Russia, Friday, Sept. 20, 2019.

AP Photo/Sergei Grits

Paper - Belfer Center for Science and International Affairs, Harvard Kennedy School

Defense Playbook for Campaigns

    Authors:
  • Richard Kuzma
  • David Michelson
  • Jacqueline Parziale
  • Kathryn Reed
  • Ryan Solís
  • Tom Wester
  • William Wright
| March 2020

The 2018 National Defense Strategy (NDS) is predicated on a single organizing principle: America’s military pre-eminence is rapidly eroding. This is not a new concept. For years, experts have warned that the economic and technological advancements of U.S. adversaries, coupled with the 2008 financial crisis and America’s focus on peripheral conflicts, have caused a decline in America’s military dominance. 

In this context, the advances of near-peer competitors such as China and Russia have created plausible “theories of victory” in potential conflicts across Eastern Europe and East Asia. Competitors’ unaddressed improvements in strategic innovation, economic investment, and dual-use technology increases the risk of conflict and strains the U.S. alliance system. It is urgent that the United States reestablish and maintain credible deterrents against these near-peer competitors. After decades of focusing on post-Cold War ‘shaping’ operations, the American military needs to reinvigorate for full spectrum great power competition.

This report is intended as a blueprint on how to begin that process from graduate students at the Belfer Center for Science and International Affairs at Harvard University. Contained inside are 12 memorandums. Each provides a high-level overview and specific recommendations on a key issue of American defense policy. 

Chinese military vehicles in parade.

(AP Photo/Mark Schiefelbein)

Journal Article - Quarterly Journal: International Security

Dangerous Confidence? Chinese Views on Nuclear Escalation

    Authors:
  • Fiona S. Cunningham
  • M. Taylor Fravel
| Fall 2019

China and the United States hold opposing beliefs about whether nuclear war can be avoided in a potential crisis or armed conflict. Taken together, these opposing beliefs increase the risk of nuclear escalation and can lead to greater crisis instability.