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(CNN) - The battle for a key Syrian city on the Turkish border intensified Monday as ISIS continued its push for control of Kobani while also scoring a victory in neighboring Iraq, taking a strategically important military base in Anbar province.
A fighter from the Kurdish People's Protection Unit, or YPG, told CNN's Arwa Damon that the battle in Kobani concerned the main border crossing into Turkey. If ISIS took control, he said, "it's over."