Sukhoi Su-34 group airstrikes against targets belonging to ISIS and Jabhat al-Nusra terrorist groups in the provinces of Aleppo, Deir ez-Zor and Idlib. On August 17, 2016, Russian Su-34 bombers carried out strikes from the Hamadan airfield on the territory of the Islamic Republic of Iran against targets of the ISIS terrorist group in the province of Deir ez-Zor. Aircraft carried high-explosive bombs OFAB-500. These aircraft were used for bombing ice dams on the rivers in Vologda oblast to prevent the floods during the spring of 2016. Sukhoi Su-34 The Sukhoi Su-34 (; NATO reporting name: Fullback) is a Russian twin-engine, twin-seat,
Sukhoi-Gulfstream S-21 speeds. As of 2012, the project had not received any funding for the 2013-2025 development period and appeared to be cancelled. Sukhoi-Gulfstream S-21 Sukhoi-Gulfstream S-21 was a projected Russian-American supersonic business jet. In the early 1990s, Gulfstream Aerospace and the Sukhoi Design Bureau began a joint effort to develop a supersonic small business jet, code named the S-21. Due to questionable market demand for commercial supersonic air travel, commitment to the project weakened and delays mounted. Gulfstream eventually dissolved the partnership, although Sukhoi continued work on the S-21. The S-21 would be capable of sustained cruise at Mach 2+ and