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War and the Modern Battlefield: Insights from Ukraine and the Middle East

The United States faces one of the most dangerous international security environments in recent history. While some aspects of warfare remain perennial, the conflicts in Ukraine and the Middle East are showing how others are rapidly evolving on the modern battlefield.

Digital Report by The CSIS Defense and Security Department — September 16, 2025

Insights for Future Conflicts from the Russia-Ukraine War

The Russia-Ukraine conflict shocked the world, unfolding a story of adaptation, resilience, and innovation with global implications. Drawing from analysis and news coverage, this report distills 10 insights that will shape the next war.  

Digital Report by Krista Auchenbach, Nathan Lewis, Scott Murphy, Quinton Packard, Scott Pence, Luke Slivinski, and Matthew Slusher — May 8, 2025

Deter and Divide: Russia's Nuclear Rhetoric & Escalation Risks in Ukraine

Russia’s nuclear threats have underpinned each stage of the war in Ukraine as Putin attempts to deter and divide NATO support. However, if Russia faces battlefield setbacks, its nuclear threats could intensify, testing NATO's resolve.

Digital Report by Heather Williams, Kelsey Hartigan, Lachlan MacKenzie, and Reja Younis — December 4, 2023

Safeguarding the Digital Landscape

While the high level of digital connectedness in Ukraine has spurred new opportunities to aid displaced Ukrainians, it has also put Ukrainians fleeing the conflict face-to-face with new online threats that can translate into very real physical danger.

Digital Report by Abigail Edwards — August 23, 2023

Russian and Ukrainian Force Disposition

Explore CSIS’s interactive map of the war in Ukraine. See how the force disposition and front lines in Ukraine have changed over time.

Digital Report by Seth G. Jones, Riley McCabe, and Alexander Palmer — March 3, 2023

"Never Trust, Always Verify"

Federal government efforts to verify which online users and which devices are accessing agency resources are increasingly complex. But, in light of global cyber threats, they are critical. Overcoming barriers to successful implementation for zero trust is more urgent than ever.

 

Digital Report by Emily Harding, James Andrew Lewis, Suzanne Spaulding, Rose Butchart, Jake Harrington, Devi Nair, Harshana Ghoorhoo, and Paula Reynal — September 12, 2022