On 8 April 2017, Daesh attacked the At-Tanf base (on the Syrian-Iraqi border). This base is home to the special forces of the international coalition that revolves around the United States.
Daesh is a terrorist organization, that for the most part, was put together by elements of the US administration, the United Kingdom and various multinational companies.
The At-Tanf base had already been attacked when it was in the hands of the Iraqi army. Yet, for the first time, Daesh is making a direct attack on the US Coalition.