On September 3, Turkish security officials made a big announcement: they had arrested Liridon Rexhepi, a man from Kosovo who was allegedly running the financial side of the Israeli spy agency Mossad in Turkey.

According to Turkish media, Rexhepi was involved in a secret operation. He was sending money to Mossad agents in Turkey, who used drones to film important targets, conducted psychological operations against Palestinian politicians, and collected intelligence about the situation in ...