One of my friends wrote an article a few years back about the value of concrete (T-walls, etc.) on modern conflict. This article was a response to that assertion. I thought it was very interesting and well-written.
Cementing Failure: Shattering The “Concrete” Counterinsurgency Idol
"The concrete barriers emplaced during the “surge” dramatically slowed sectarian violence—for a time—but also cemented the sectarian and ethnic divisions that empowered Prime Minister Nouri al-Maliki’s power grab, contributed to government corruption, and set the conditions for the rise of ISIS. These same divisions will threaten Iraq long after ISIS is defeated if a political solution that incorporates and adequately represents all sects and ethnicities is not further developed."
Cementing Failure: Shattering The "Concrete" Counterinsurgency Idol • The Havok Journal
Cementing Failure: Shattering The “Concrete” Counterinsurgency Idol
"The concrete barriers emplaced during the “surge” dramatically slowed sectarian violence—for a time—but also cemented the sectarian and ethnic divisions that empowered Prime Minister Nouri al-Maliki’s power grab, contributed to government corruption, and set the conditions for the rise of ISIS. These same divisions will threaten Iraq long after ISIS is defeated if a political solution that incorporates and adequately represents all sects and ethnicities is not further developed."
Cementing Failure: Shattering The "Concrete" Counterinsurgency Idol • The Havok Journal