War planes from Turkey have attacked targets of separatist Kurdistan Workers Party in Northern Iraq just hours after a deadly assault by PKK rebels killed eight Turkish soldiers in Hakkari province near the Turkish-Iraq border. Earlier, the Turkish Defence Minister, Ismet Yilmaz vowed a strong retaliation against the PKK for its assault on Turkish forces. The Turkish soldiers were killed when their military convoy was ambushed by the PKK rebels in the country's south-east. Four roadside bombs exploded as the Turkish military convoy passed by. Eleven Turkish soldiers were also wounded in the attack.