ISIS has released a short video in which the extremist group appears to say it will kill American ground forces if the White House deploys them to Iraq and/or Syria. The video apparently is the terrorist network’s first response to President Obama’s vow to “degrade and ultimately destroy” it. The 52-second video is billed as a preview for a longer video, The New York Times reports. It begins with American troops and tanks under fire and American soldiers carrying a wounded comrade toward an armored vehicle. The words “Flames of War” appear with another phrase, ”Fighting has just begun,” below that, and ends with “Coming Soon.” Joint Chiefs Chairman Gen. Martin Dempsey told U.S. senators recently that U.S. troops could end up fighting ISIS in a ground war—contrary to what Obama has said.