Sukhoi Su-34 were delivered on 18 July 2014. 18 aircraft were delivered in 2014, and 20 planned to be delivered in 2015. It is intended to replace the Sukhoi Su-24 and the Tupolev Tu-22M3. Sukhoi has delivered the first batch of Su-34s to the Russian Ministry of Defense under the 2015 order on 21 May 2015. On 16 July 2015, the Sukhoi Company handed over another batch of Su-34 frontline bombers to the Ministry of Defense of the Russian Federation. The transfer took place in the framework of the Unified Military Hardware Acceptance Day in the Sukhoi Company's branch — V.P.Chkalov Novosibirsk
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