Eighteen people were killed on Tuesday in fighting between Turkish soldiers and Kurdish militants at three military outposts in southeast Turkey, officials and security sources said, in the deadliest clashes in recent months. Eight Turkish soldiers were killed and 16 others wounded in simultaneous attacks by the militants of the Kurdistan Workers Party (PKK) on the outposts, the sources were quoted as saying by Reuters. In subsequent clashes Turkish troops killed 10 PKK militants, according to the governor's office in Hakkari province where the fighting occurred, near the mountainous border with Iraq.