CSIS Defense and Security Department

LIVE NOW | Join @CSISDefense and Lieutenant General Frank Lozano for a Strategic Landpower Dialogue exploring the Army's acquisition modernization, Joint Force & coalition interoperability, and the future of U.S. landpower. Join: youtube.com/watch?v=moI-xn…

About one-third of the White House’s $87.6 billion supplemental request is driven by costs related to the Iran war. Yet some war costs will have to be covered by other budget mechanisms, writes CSIS's Mark Cancian and Chris Park. Read: csis.org/analysis/war-c…

On July 6, China tested a JL2 or JL3 submarine-launched intercontinental ballistic missile (ICBM). CSIS experts argue that testing ballistic missiles in international waters without following the proper protocols poses risks to the international community. Read: csis.org/analysis/china…

“The third winter campaign—from November 2025 to February 2026 provides the clearest evidence for Russia’s intentional leveraging of seasonal conditions in its targeting strategy and overall geography of coercion,” writes @csisfutures experts. Read: csis.org/analysis/geogr…

Artificial intelligence is changing the way terrorist groups operate, but not in the way many people expect. @dbyman, Director of the @CSIS_Threats, explains where AI is most likely to have an impact, from propaganda and recruitment to intelligence, counterterrorism, and policymaking. Learn more: csis.org/analysis/artif…

"Anything if attacked would change the America way of life-that is homeland defense," claims Senior Vice President & Chief Security Officer of the @NFL, Chief Cathy Lanier, at a discussion on resilience for evolving homeland threats at @CSISDefense's 2026 Global Security Forum. Watch: youtube.com/watch?v=6Y8TaA…

“We’re just not keeping pace,” claims Senior Vice President & Chief Security Officer of the @NFL, Chief Cathy Lanier, at a discussion on the evolution of homeland defense at @CSISDefense's 2026 Global Security Forum. Watch the full conversation here: youtube.com/watch?v=6Y8TaA…

Last night, @SethGJones joined @OutFrontCNN to discuss Ukraine's recent drone strikes on Russia and the impact on the Russian population.

Are the escalation risks of nuclear-capable hypersonics overblown? On the latest episode of HTK, @heatherwilly and @tomkarako examine concerns about dual-capable systems and argue that the risks of ambiguity may be overstated.

JUST RELEASED | New @CSISDefense data shows Russia has lost the military initiative in Ukraine as costs continue to mount, having suffered 1.4 million battlefield casualties and as many as 450,000 deaths since its February 2022 full-scale invasion. This is over four times more battlefield deaths in 4.5 years than the U.S. has suffered in every conflict since World War II. 🧵 Read more here: bit.ly/4vQXO0v

TOMORROW I Tune-in for @CSISDefense's Global Security Forum exploring America at 250 - a defining moment for American statecraft and military power - through expert panel discussions with government, industry, and finance leaders. See the full agenda: csis.org/programs/globa…

As the U.S. approaches its 250th anniversary, CSIS scholars reflect on the enduring strengths that have shaped American leadership, security, and innovation. This conversation is just the beginning. On June 30, tune-in for @CSISDefense's 2026 Global Security Forum centered around America at 250 - a defining moment for American statecraft and military power. Learn more: csis.org/programs/globa…

On The Last Line of Defense, @general_ben, former Commanding General of the U.S. Army Europe, joins @SethGJones to discuss the recent shift in momentum in favor of Ukraine and Ukraine’s use of technology to create a “kill zone.” Listen here: csis.org/podcasts/last-…

JUNE 30 | @CSISDefense's Global Security Forum will convene leaders to discuss how American statecraft and military power can drive strategic advantage in the years ahead, including a panel on the end of sanctuary with Chief Cathy Lanier, @Rep_Whitesides, @RepJeffCrank, and Kari Bingen. Tune-in: bit.ly/4edimtN

"We've got agreements to agree for these prioritized munitions—but they're not on contract," said @tomkarako, on why sub-tier suppliers bear the most budget risk, during the rollout of MDP’s latest report.

“The modernization and growth of Chinese forces mean the United States has lost ‘overmatch’—the ability to overwhelm an adversary— in a war against China," writes @CSISDefense experts. Read the report: csis.org/analysis/warti…

TUESDAY, JUNE 30 I Request a spot for @CSISDefense’s annual Global Security Forum featuring keynote addresses and discussions, including a panel with @SpeakerRyan, Vincent Viola, and @JenGriffinFNC on the Future of American Statecraft. Learn more: csis.org/programs/globa…

June 30 | Join @CSIS for the annual Global Security Forum for conversations featuring @SethGJones, Admiral Chris Grady, General Dave Goldfein, and General Austin Scott Miller on “The Future of Command: Leadership Through Crisis and Change.” More here: csis.org/events/2026-gl…

"The World Cup presents a complex and dynamic threat surface that will be a ripe target set for malicious actors," writes CSIS expert Nikita Shah. What are the key cyber threats to the 2026 World Cup, and how should the United States prepare? Read more: csis.org/analysis/cyber…

June 30 I Join @CSISDefense for the annual Global Security Forum to discuss America at 250: A Defining Moment for American Statecraft and Military Power and featuring a panel on the future of command. Learn more: csis.org/events/2026-gl…