REUTERS/Khalil Ashawi/File Photo Acquire Licensing RightsOct 5 (Reuters) - U.S.-allied Syrian Kurdish forces said on Thursday that Turkish attacks had killed eight people in an escalation prompted by a bomb attack in Ankara claimed by Kurdish militants. A Turkish defence ministry official said a ground operation into Syria was one option for Turkey, which has previously mounted several incursions into northern Syria against the Syrian Kurdish YPG militia. BORN IN SYRIAN WARThe YPG, or the People's Protection Units, emerged as a powerful armed group during the Syrian civil war, which began in 2011. It is affiliated to the main Syrian Kurdish faction, the Democratic Union Party (PYD), and has a female counterpart, the YPJ. YPG control was initially concentrated in three predominantly Kurdish regions of northern Syria - known in Kurdish as Rojava.

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Persons: Khalil Ashawi, Bashar al, Assad, Abdullah Ocalan, Tom Perry, Jon Boyle Organizations: REUTERS, Kurdish, Syrian Kurdish, Islamic State, Kurdistan Workers Party, Democratic Union Party, U.S, Syrian Democratic Forces, Islamic, AS, European Union, NATO, DAMASCUS, Kurdish Regional Government, Thomson Locations: Tal Abyad, Syria, Syrian Kurdish, Ankara, Turkey, Syrian, United States, France, Kurdish, U.S, TURKEY, Damascus, Qamishli, Iraq