Ring of steel
Ring of steel may refer to:
- Ring of Steel (film), a 1942 Army recruiting film narrated by Spencer Tracy
- Ring of Steel (Kabul), a series of 25 Afghan National Police checkpoints in central Kabul
- Ring of Steel: Germany and Austria-Hungary at War, 1914–1918, an award-winning book on World War I by Alexander Watson
- Traffic and Environmental Zone (also the "ring of steel"), the security and surveillance cordon surrounding the City of London
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