The Kurdistan Workers’ Party or PKK has formally declared its dissolution. The announcement on Monday is a milestone that could bring an end to one of the world’s longest-running conflicts.

The Kurdistan Workers Party (PKK) militia announced its decision on Monday to dissolve the group, a historic move after decades of conflict with Turkey that have killed tens of thousands of people.

The Kurdish insurgent group PKK in Turkey says it will lay down its arms and disband after a decades-long fight that killed tens of thousands.