The United States is preparing military options, including surveillance flights, to pressure Islamic State militants in Syria, officials say.
General Martin Dempsey, chairman of the Joint Chiefs of Staff, said last week that Islamic State would eventually need to be addressed on "both sides of what is essentially at this point a non-existent border" between Syria and Iraq.
Dempsey's spokesman confirmed today that options against Islamic State were under review and stressed the need to form "a coalition of capable regional and European partners."
"With Central Command, [Dempsey] is preparing options to address [Islamic State] both in Iraq and Syria with a variety of military tools including airstrikes," Colonel Ed Thomas said.
No decision had been made to expand US action beyond the limited airstrikes under way in Iraq, it was added.
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