To make things particularly interesting, and all of a sudden, two days ago Turkey has announced that its troops guarding the Shah Suleiman Tomb near Qarah Qawzaq have been held as hostages by the ISIS since June 2014.

Ironically, local FSyA and YPG units are now attempting an advance in this direction. They should have reached the place yesterday: Syria Kurds, rebels advance into ISIS bastion
Syrian Kurdish and rebel forces, backed by U.S.-led air strikes, advanced Thursday into Raqqa province, where ISIS has its de facto capital, an activist group said.

"The YPG [Kurdish People's Protection Units] and rebel forces captured 19 villages in Raqqa province," said the Syrian Observatory for Human Rights.

"The U.S.-led international coalition played a key role in the advance, bombing the ISIS positions and forcing its fighters to withdraw," said Observatory director Rami Abdel Rahman.
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To further increase the irony, YPG spokesman Polat Can (his Twitter account was meanwhile shut down) now claims Turkey officially requested the YPG to rescue its hostages.