Wretchard at Belmont Club has an interesting discussion of the technology race we find ourselves in against the Islamists in Iraq.
Improvised Explosive Devices (IEDs) are more than physical objects, they are symbols of asymmetrical warfare, along with the suicide bomb and the sniper. They are exemplars of 'insoluble' threats against which resistance is supposedly futile and to which surrender is the only viable response. In times past, the submarine and bombing aircraft occupied the same psychological space. In the late 19th century, Alfred Thayer Mahan theorized that sea control, exercised through battlefleets, would be the arbiters of maritime power. But rival theorists believed weaker nations using motor torpedo boats and above all, the submarine, could neutralize battlefleets. The way to checkmate global superpower Britain, so the theory went, was through asymmetrical naval warfare.
In the early days of World War 1, three British armored cruisers HMS Aboukir, HMS Hogue and HMS Cressy were patrolling the North Sea making no attempt to zigzag. The German U-9 fired a single torpedo into the Aboukir which promptly sank. HMS Hogue gallantly raced up to rescue survivors, believing the Aboukir was mined, and came right into the U-9's sights. She was sunk in turn. The HMS Cressy, believing both were mined, sped like a clay pigeon in a shooting gallery into another one of the U-9s torpedoes. In under an hour the asymmetrical weapon had killed 1,459 British sailors and sunk three cruisers.
In the 1930s the bomber airplane took the place of the U-boat as the unstoppable weapon in the public's imagination. Fired by the concepts of Italian airpower theorist Giulio Douhet, many interwar policymakers believed that bomber aircraft alone could bring a nation to its knees. The destructive capacity ascribed to the biplane bombers of the day approached that later attributed to nuclear weapons during the Cold War and so terrified politicians that it fueled the policy of appeasement.
Wretchard goes on to examine how the Improvised Explosive Device is being used by the jihadis in Iraq, how it is evolving, and the ongoing and increasingly successful efforts to render it relatively ineffective. It's worth a read.