The Ring of Steel (, Kamerband-i Shahr-i Kabul, "Belt of the City of Kabul") was a series of 25 Afghan National Police checkpoints in the city of Kabul.Staff Sgt. Sarah Brown. Can the Ring of Steel Protect Kabul? Muncie Free Press, 7 June 2010 Set up in June 2010, the Ring of Steel was designed for security purposes and intermittently staffed. Transiting vehicles are occasionally stopped and checked.
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