US has fired artillery from Jordan into Syria, hitting IS targets in Palmyra and to back rebels in Syria. The strike was launched in support of Syrian rebels who seized an Islamic State military base near the border city of al-Tanf, where the borders of Syria, Iraq and Jordan converge.
Col. Steve Warren to WaPo confirms:
The Pentagon acknowledged Friday that ground-based rocket artillery fired from Jordan was used to strike targets in southern Syria last week, marking an expansion to U.S. ground operations in the war against the Islamic State.
Col. Steven Warren, a spokesman for the U.S.-led coalition in the region said that a small detachment of U.S. High Mobility Artillery Rocket Systems, or HIMARS, had fired a small salvo of rockets to support U.S. backed Syrian forces fighting near the tri-border region of Syria, Iraq and Jordan.