The source, who spoke on the condition of anonymity, said that Vladislav Kuzmichev and Mikhail Zavali of Rosoboronexport signed a contract to provide 20 Russian warplanes – 10 Sukhoi Su-35, 4 10 Sukhoi Su-30 and 6 Yakovlev Yak-130 – as well as several Project 636 Kilo-class submarines and tanks and armoured vehicles.