International Security & Defense

1109 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. 

Image of Vladimir Putin standing in front of a podium

AP Photo

President Joe Biden delivers remarks about government regulations on artificial intelligence systems during an event in the East Room of the White House, Monday, Oct. 30, 2023, in Washington.

(AP Photo/Evan Vucci)

Policy Brief

Action on AI: Unpacking the Executive Order’s Security Implications and the Road Ahead

| Nov. 08, 2023

On October 30, 2023, President Biden issued the Executive Order on the Safe, Secure, and Trustworthy Development and Use of Artificial Intelligence, aimed at realizing the benefits of AI, while mitigating critical risks. This article provides an overview of its key national security initiatives and explores issues relevant to implementation.

Ukrainian soldiers sit on an armoured vehicle as they drive on a road between Izium and Lyman in Ukraine, Tuesday Oct. 4, 2022.

AP Photo/Francisco Seco

Analysis & Opinions - Belfer Center for Science and International Affairs, Harvard Kennedy School

Ukraine’s Defense: A Whole-of-Society Effort Demanding Additional Support

| Oct. 13, 2023

For Ukraine to maintain its defense and decisively thwart Russia’s invasion, it will take steadfast commitments from Western allies providing both state-of-the-art equipment and basic warfighting needs, local industry leaders and factory workers readying equipment for the frontlines and developing innovative technologies, and civilian volunteers tirelessly filling in the remaining gaps.

Flowers bloom around graves of World War I soldiers prior to a foundation laying ceremony at Loos British Cemetery in Loos-en-Gohelle, France, Thursday, May 4, 2023.

AP Photo/Michel Spingler)

Journal Article - Quarterly Journal: International Security

The Peril of Peaking Powers: Economic Slowdowns and Implications for China’s Next Decade

| Summer 2023

Peaking great powers facing a slowdown in growth are likely to try to violently shake up the world. These findings amend classic theories of great power conflict. They help explain some of the most consequential geopolitical events in modern history. And they have ominous implications for contemporary Chinese foreign policy. 

NATO Secretary General Jens Stoltenberg, right, and Ukraine’s President Volodymyr Zelenskyy address a media conference during a NATO summit

AP Photo/Mindaugas Kulbis

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

Ukraine-NATO Primer: Membership Options Following the 2023 Annual Summit

| July 14, 2023

From July 11-12, 2023, NATO leaders gathered in Vilnius, Lithuania for one of the most significant NATO summits in history. This timely brief by Eric Rosenbach, Grace Jones, and Olivia Leiwant serves as a background piece on Ukraine’s history with NATO, potential future pathways for accession, and the operational impact Ukraine’s NATO membership could have on the alliance. 

Black and white photo of paratroopers conducting a battalion run in North Carolina

Spc. Vincent Levelev/U.S. Army

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

From the Inside Out: Achieving Long-Term Army Sustainability through Effective Command Climate

| July 2023

The American public is increasingly losing trust and confidence in the military and has a lower propensity to serve. This has significant implications for the safety and security of the nation. To overcome these issues, the Army must develop a long-term strategy to create a positive organizational culture. This requires senior leaders to focus on educating and training junior Army leaders on how to improve the organizational climate while also modernizing bureaucratic processes that frustrate soldiers and undermine morale.

Saudi Arabian oil facilities in flames

ALJAZEERA

Journal Article - Survival

Houthis in the Footsteps of Hizbullah

| 2023

The Houthis' strategic behaviour and communications indicate that they have attempted to succeed against Saudi Arabia in the same way that Hizbullah has succeeded against Israel: to harness their long-range missiles as a means of subjecting their stronger opponents to limitations and 'rules of the game.' So far, the Houthis have been far less successful than Hizbullah. Nevertheless, the Houthis have become an integral part of the Iran-led 'axis of resistance.'