| Siege of Dara (573) | |||||||
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| Part of Byzantine–Sasanian War of 572–591 | |||||||
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Byzantine Empire | ||||||
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The Siege of Dara occurred in 573, during the Byzantine–Sasanian War of 572–591. The siege lasted 4 months and ended with the city's fall to the Sasanian Persians. The news of the fall of Dara, long a major Byzantine stronghold in Upper Mesopotamia, reportedly drove Emperor Justin II insane.