Sukhoi Su-34 On 9 July 2013, three more Su-34s were delivered in an official acceptance ceremony held at the Novosibirsk Aircraft Plant. These three aircraft were already in the new Russian Air Force camouflage scheme. By the end of 2013, Sukhoi completed the 2008 contract and started deliveries on 2012 contract. In August 2013, Sukhoi signed a contract with the Kazan-based Radiopribor holding company for 184 Identification friend or foe transponders for the Su-34 to be delivered by 2020. On 10 June 2014, Russia1 TV reported a further delivery of Su-34s was made to the 559th Regiment at Morozovsk. Another three aircraft
Sukhoi Su-27 by the Japan Ministry of Defense. Russia denied the incursion, saying the jets were making routine flights near the disputed Kuril Islands. In another encounter, on 23 April 2014 an Su-27 nearly collided with a United States Air Force Boeing RC-135U over the Sea of Okhotsk. Russia plans to replace the Su-27 and the Mikoyan MiG-29 eventually with the Sukhoi Su-57 stealth fifth-generation multi-role twin-engine fighter. A squadron of Su-27SM3s was deployed to Syria in November 2015 as part of the Russian military intervention in the Syrian Civil War. Ethiopian Su-27s reportedly shot down two Eritrean MiG-29s and damaged another