Turkish fighter jets that took off from the Diyarbakır army airbase launched a new series of air strikes on the camps of the PKK terrorist organization in northern Iraq on Thursday.Meanwhile, 31 PKK terrorists were killed during Turkish security forces' operation in the southeastern Hakkari province within the last 24 hours, Turkish military said Thursday.Separately, 10 PKK terrorists surrendered to security forces in Turkey's southeastern Şırnak province.Turkish security forces have responded to renewed PKK attacks in the southeast by launching air strikes on PKK bases in northern Iraq and the army has sent ground troops across the border, killing nearly 1,000 terrorists.In early September, Turkey also sent two units of its special forces, comprising of 230 troops into northern Iraq for the first time in more than two years to pursue PKK terrorists across the border, a military source said.The PKK is considered as a terrorist organization by Turkey, the U.S. and the EU.