In September 2014, Francis Ricciardone, the former US ambassador to Turkey, accused the Turks of working with Al Nusrah. “We ultimately had no choice but to agree to disagree,” Ricciardone said of his discussion with Turkish officials. “The Turks frankly worked with groups for a period, including Al Nusrah, whom we finally designated as we’re not willing to work with.”
Since early on the rebellion against the Assad regime, Turkey has permitted large numbers of foreign jihadists to travel into Syria. At various points, this benefitted not only Al Nusrah, but also al Qaeda’s rivals in the Islamic State, which Turkey now opposes.
For instance, in October 2013, The Wall Street Journal reported on meetings between US officials, Turkish authorities and others. “Turkish officials said the threat posed by [Al Nusrah], the anti-Assad group, could be dealt with later,” according to US officials and Syrian opposition leaders who spoke with the newspaper. Officials also told the publication that the US government’s decision to designate Al Nusrah as a terrorist group in December 2012 was intended “in part to send a message to Ankara about the need to more tightly control the arms flow.”
Eventually, in 2014, Turkey also designated Al Nusrah as a terrorist organization. Turkish authorities have also reportedly launched sporadic raids on al Qaeda-affiliated sites inside their country.