The U.S. and Turkey are stepping up their campaign to choke off Islamic State’s main route out of Syria by deploying advanced rockets and more Turkish forces to the Syrian border, U.S. and Turkish officials said Tuesday.

Turkish Foreign Minister Mevlut Cavusoglu said the U.S. plans to send the rockets to the Turkey-Syria border. The rocket system will be operated by U.S. forces and it is expected to be incorporated into the Turkish military’s border operations, officials said.

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