Selahattin Demirtas, co-leader of the pro-Kurdish Peoples' Democratic Party (HDP) is seen during an interview with Reuters at the European Parliament in Brussels, Belgium, January 27, 2016. "The international community should call on both the Turkish government and the PKK for a ceasefire and a return to healthy negotiations, and they must make this call repeatedly," Selahattin Demirtas, co-leader of the pro-Kurdish Peoples' Democratic Party (HDP), the third largest party in the Turkish parliament, told Reuters. "Turkey's domestic peace is not an issue for Turkey alone. It is directly related to the resolution of the Syrian conflict and to the migration problem in Europe," he said in an interview on Wednesday in Brussels, where he was participating in a Kurdish conference in the European parliament. REUTERS/Yves Herman (File: 2016-01-28T110802Z_346041526_GF10000286370_RTRMADP_3_TURKEY-KURDS.JPG )