Why has PKK leader Ocalan called on group to disarm and dissolve?

Imprisoned Kurdish leader Abdullah Öcalan called on his militant group, the PKK, on Thursday to lay down its arms and dissolve as part of a new bid to end a four-decade-long conflict that has claimed tens of thousands of lives, with far-reaching implications across the Middle East. France24 correspondent from Ankara, Jasper Mortimer, tells us more.