With the exception of mines, how are the vast majority of terrorist bombs classified?

The classification of the vast majority of terrorist bombs as self-constructed, improvised weapons is accurate because many terrorist groups tend to use readily available materials to create their devices. This approach allows them to circumvent traditional supply chains and security measures that may be in place for commercially manufactured or military-grade explosives.

Improvised explosives are often crafted using household items, chemicals, or other common materials, reflecting the resourcefulness of these groups. This method of bomb-making is not only cost-effective but also enables the terrorists to execute attacks without the need for sophisticated technology or advanced training typically required for handling manufactured explosives or military-grade materials.

Consequently, the prevalence of improvised explosive devices (IEDs) in both domestic and international terrorism underscores the significant threat they pose, especially as they can be constructed by individuals with limited expertise. In contrast, the other categories of explosives, such as commercial-grade or military explosives, are less commonly utilized by terrorists due to the stringent regulations and security surrounding their sale and distribution.