By Kyle Orton (@KyleWOrton) on 20 March 2017

Mostafa Mahamed on Sky News, August 2016
Mostafa Mahamed (Abu Sulayman al-Muhajir) is a U.S.-designated terrorist, an al-Qaeda operative who has formally resigned from al-Qaeda’s branch in Syria, Jabhat Fatah al-Sham (JFS), which was previously Jabhat al-Nusra and has now reorganized itself as Hay’at Tahrir al-Sham (HTS). Earlier this month, on 11 March, Michael Ratney, the U.S. special envoy to Syria, released an open letter (in Arabic) labelling all constituents of HTS as terrorists seeking to exploit the Syrian opposition, and incited divisions within the Islamist sections of the insurgency by including Ahrar al-Sham—heretofore a close HTS ally, though recently involved in clashes with the group—as part of the Syrian revolution. HTS issued a formal response on 12 March and, on 20 March, Mahamed issued his own response, which is reproduced below. The main themes were anti-Americanism and dissuading the Syrian armed opposition that the U.S. was an ally; arguing that HTS was different than JFS and unconnected to al-Qaeda; and the strong impression of a threat should the U.S. move against HTS—while explicitly denying that such a threat was being made.
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