Fighters with a Kurdish separatist militant group that has waged a decades-long insurgency in Turkey began laying down their weapons in a symbolic ceremony on Friday in northern Iraq, the first concrete step toward a promised disarmament as part of a peace process.

Thirty Kurdistan Workers Party (PKK) militants burned their weapons at the mouth of a cave in northern Iraq on Friday, marking a symbolic but significant step toward ending a decades-long insurgency a...

A senior Turkish official said Friday’s move was an “irreversible turning point” and described it as a “milestone.”