2015 Russian Sukhoi Su-24 shootdown al-Nusra Front fighters. Russia has bombed the area near the Turkish border to support Syrian government forces. Syrian Turkmen formed their own armed brigades called Syrian Turkmen Brigades in opposition to the Syrian government of President Bashar al-Assad, loosely affiliated with other rebels such as the Free Syrian Army. The Turkmen brigades also cooperate with al-Qaeda's Syrian affiliate the al-Nusra Front and with the Salafi coalition known as Ahrar al-Sham. In Latakia the Turkish-supported rebels formed the Jabal al-Turkman Brigade. On 24 November 2015 at 9:24 am, as it was returning to Khmeimim airbase, a Russian Sukhoi Su-24 aircraft with
Sukhoi Superjet 100 PD-14 engine could be developed; and Russian inertial navigation system and APU could replace Honeywell's; the landing gear produced by Safran would also need to be replaced. Russian content should double to 30% as US restrictions limit its export potential. Sukhoi forecasts 345 sales from 2018 to 2030, mostly in post-Soviet states and some in south-east Asia and Latin America, including an improved range business jet version. Sukhoi expects to produce 30 SSJs in 2018, as in 2017. The seating capacity is to be raised to 110, and hot and high operations to 4000 m and 50°C. A freighter variant