Why does the Afrin operation gain importance?

A large number of Turkish military convoys are being dispatched to the Syrian border as part of the preparations for a new operation to prevent the formation of a terror corridor by the PKK and YPG terrorist in Syria's Afrin province.

Security sources reported that the convoys of heavy weapons including several tanks, were dispatched to the Syrian border in Hatay province and security posts inside Idlib province which were established in late 2017 as part of a de-escalation agreement between Iran, Russia and Turkey.