They are smashed by Iranians. As far as I know PJAK has no relevance in Iran anymore.
I don't think they are smashed.
"On September 29, 2011, Iranian sources reported that PJAK officially surrendered with 180 deaths and 300 injured, accepting Iranian demands of retreating one mile from the Iranian border and ceasing armed operations,"
"Syrian Civil War began
in the early spring of 2011 within the context of the Arab Spring protests, with nationwide protests against President Bashar al-Assad's government, whose forces responded with violent crackdowns."
Fighting Iran, that means a lot of front to fight for terrorist's. Also why should they fight with Persian's when interests go in parallel?
"PYD supported by the American administration are also supported by the Syrian government," Bashar Ja'afari told reporters, following a closed-door U.N. Security Council meeting to discuss Turkey's recent shelling of PYD targets in northern Syria.
"The victory achieved in the northern part of Syria, both by the Syrian army and the Syrian Kurds, is a joint victory for all Syrians. Everybody is benefiting from the Syrian army's direct support," Ja'afari said.
A recent row between Turkey and the U.S. – longtime NATO allies – centers on Washington's objection to describing the PYD as a terrorist group. Ja'afari's statement marks one of first direct acknowledgement by the Syrian regime of its cooperation with the PYD."
Syria's Assad admits sending weapons to PYD
Story includes Iraq, too.