YPG forces as well as later the broader Syrian Democratic Forces (SDF) have clashed heavily with Islamist forces of all stripes in the following years, in particular with those representing the Islamic State of Iraq and the Levant (ISIL). Including the Siege of Kobanî (2014), the Al-Hasakah offensive (February–March 2015), the Al-Hasakah offensive (May 2015), the Tell Abyad offensive (May–July 2015), the Battle of Sarrin (June–July 2015), the Battle of Al-Hasakah (June–August 2015), and the Raqqa campaign (2016–present) including the Battle of Tabqa (2017).