The U.S. tracked a Russian plane heading toward the base. The warplane dropped a cluster bomb, according to U.S. and rebel officials.
After the first strike, U.S. central command air operations center in Qatar called Russia’s air campaign headquarters in Latakia, Syria to tell them that the base shouldn’t be attacked.
However, Russian forces struck again nearly 90 minutes after the call was made. Russian pilots didn’t respond to U.S. calls using frequencies the two sides had previously agreed to use in case of an emergency.
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