RIA cited Mikheev saying Russia hopes that in the first half of 2020 it will sign contract documents MOSCOW: Russia plans to sign a new contract with Turkey to supply its S-400 surface-to-air missile systems in the first half of 2020, the head of Russian state arms exporter Rosoboronexport, Alexander Mikheev, said, according to RIA Novosti news agency. “We hope that in the first half of 2020 we will sign contract documents,” RIA cited Mikheev as saying.