Defense & Aerospace Daily Podcast [Mar 31, 2026] IISS’ Ben Barry

Key Takeaways

• Barry warns US vulnerability after Iran conflict
• British army faces capability gaps needing massive investment
• Ajax program exemplifies costly acquisition failures
• Ground forces remain essential despite air‑space focus
• Rebuilding UK army could cost billions over decade

Summary

Ben Barry, retired British Army brigadier and IISS land‑warfare director, discusses his new book “The Rise and Fall of the British Army: 1975‑2025” on the Defense & Aerospace Daily Podcast. He examines the pivotal role of ground forces in a potential US‑Israel conflict with Iran and warns that dwindling weapon stocks could expose a strategic vulnerability for the United States. Barry also outlines the massive cost and timeline required to rebuild a future‑ready British army, highlighting capability shortfalls and the costly lessons from the failed Ajax armored‑vehicle program.

Pulse Analysis

The prospect of a US‑Israel war against Iran has reignited debate over the relevance of conventional ground forces. While high‑tech air and cyber capabilities dominate headlines, Barry argues that without sufficient infantry, armor, and artillery, coalition operations risk stalling in urban and mountainous terrain. Diminishing stockpiles of tanks, artillery rounds, and logistical support could leave the United States with a narrow window of operational freedom, forcing policymakers to reassess force‑mix decisions and prioritize rapid replenishment of critical munitions.

Barry’s new book traces the British Army’s decline from the post‑Cold War era to 2025, exposing chronic under‑investment and procurement missteps. The Ajax program, plagued by software glitches and cost overruns, serves as a cautionary tale for future projects. To field a modern land force, the UK must acquire next‑generation armored vehicles, long‑range precision fires, and integrated digital command networks. Estimates suggest rebuilding these capabilities could require several billion dollars over the next decade, demanding a coordinated effort between the Ministry of Defence, industry partners, and allied nations.

The broader implications extend to the global defense market. As both the US and UK confront capability shortfalls, defense contractors face pressure to deliver affordable, interoperable solutions that can be fielded quickly. Lessons from Ajax underscore the need for streamlined acquisition processes, rigorous testing, and transparent budgeting. Stakeholders who adapt to these realities will shape the next generation of land warfare, ensuring that allied forces remain resilient amid escalating geopolitical tensions.