Yemen
On 11 August 2009, Yemeni armed forces started Operation Scorched Earth in northern Yemen to fight the Sa'dah insurgency. Yemeni Air Force backed the army in the offensive performing air raids over rebel held positions. On 5 October 2009, a Yemeni Su-22 crashed when it was flying in formation with another aircraft, on the way back from a mission. The rebels claimed they shot it down, while Yemeni armed forces said it crashed due to technical problems. Earlier on 2 October, the insurgents said they shot down a "MiG-21" while again the military insisted technical problems caused the crash. On 8 November, a third Yemeni fighter aircraft reported to be a "Sukhoi" was destroyed. Again the military claimed it crashed due to technical problems, while the rebels claimed they shot it down. The pilot ejected and was recovered by friendly forces.
The Yemeni Air force once again used Sukhoi aircraft during the Arab Spring uprising. On 28 September 2011, a Yemeni Air Force Su-22 was shot down by tribesmen opposed to the rule of President Saleh. The government confirmed that rebel tribesmen were responsible for the shoot-down, and that the jet's pilot had been captured.
Read more about this topic: Sukhoi Su-17, Operational History