[SunkenCiv]

• Did Uruk soldiers kill their own people? 5,500 year old fratricide at Hamoukar Syria
• Ancient city looks like first victim of urban war 6,000-YEAR-OLD TOWN SUCCUMBED TO FIRE,MISSILES
• New Details of First Major Urban Battle Emerge
• Ancient Weapons Found In RuinsIn Syria
• Ruins in Northern Syria Bear the Scars of a City's Final Battle
• Artifacts found at ancient city ("This was 'Shock and Awe' in the Fourth Millennium BC.")
• Ancient Citadel Shows Scars Of Mass Warfare (Mesopotamia - 3500BC)
• Archaeologists Unearth a War Zone 5,500 Years Old
• New Discoveries In Syria Confirm Theory On Spread Of Early Civilization

[patton]

It had to do with water, I would guess.

;)