In June 2015 , the main Syrian Kurdish militia , YPG , and the Turkey 's main pro-Kurdish party , HDP , accused Turkey of allowing Islamic State ( ISIL ) soldiers to cross its border and attack the Kurdish city of Kobanî in Syria . The conflict between Turkey and PKK escalated following the 2015 Suruç bombing attack on progressive activists , which was blamed on a Turkish ISIL-affiliated group . During the Operation Martyr Yalçın , Turkey bombed alleged PKK bases in Iraq and PYD bases in Syria 's Kurdish region Rojava , effectively ending the cease-fire ( after many months of increasing tensions ) and the killing of two policeman in the town of Ceylanpınar ( which the PKK denied carrying out ) . Turkish warplanes also bombed YPG bases in Syria
2015 Suruç bombing
2015 Suruç bombing
Kurdish–Turkish conflict (1978–present)