It’s kind of hard to get full overview of moves re: Syrian Kurdistan (emerging).
This WSJ piece is seeing it more from the angle of Turkey-PKK rivalry/conflict and Assad regime-PKK ties. How much PKK’s role and prospect re: currently emerging Syrian Kurdistan (will PKK use Syrian Kurdistan as attack launching pad or base against Turkey? will Syrian Kurdistan let that happen?) - is the crux of the issue Turkey is reacting right now. Seems.
ANTAKYA—Turkey warned that it might take action to stop groups it deemed “terrorists” from forming a Kurdish-run region in Syria, underscoring Ankara’s growing concern that such Kurdish rule in Syria’s north could provide sanctuary to militants.
"We will not allow a terrorist group to establish camps in northern Syria and threaten Turkey," Prime Minister Recep Tayyip Erdogan said in Ankara on Thursday ahead of a trip to London. "If there is a step which needs to be taken against the terrorist group, we will definitely take this step."