US military says it's 'highly confident' it killed insurgent, who was hit while alone on motorcycle, in second operation this month against senior terror figures in Syria
Commander of US offensive insisted at time that dam wasn't targeted, but Central Command now confirms military dropped 3 2,000 pound bombs on 'towers attached'
Current and former officials say deaths caused by Talon Anvil were collateral damage, but other sources say unit 'circumvented rules imposed to protect noncombatants'
CENTCOM says 2019 strike carried out in Baghouz despite presence of civilians -- previously flagged as a 'possible war crime' -- was 'self-defense' and 'proportional'
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