As reported by Censor.NET citing the National Security and Defense Council press service, this was stated by NSDC Secretary Oleksandr Turchynov.
"The main developer of the launch vehicle was the US-based Orbital ATK while its first stage was created by the Ukrainian space industry enterprises including Pivdenne Design Bureau and Pivdennyi Machine-Building Plant manufacturing group in cooperation with ARCOS, Khartron-UCOM, Chezara, Rapid and others. The Ukrainian experts spent last year and a half upgrading the first stage of the Antares launch vehicle adapting it to the new engine.
"The decision to replace the Russian engine, which was previously used in the rocket, was made in 2014 following its explosion seconds after the launch. The Ukrainian specialists faced a unique challenge to adapt the new engine to the missile designed for a completely different one as soon as possible. And they succeeded! The changes in the launch vehicle ' s design have significantly improved its capacity and financial viability.
"I congratulate everyone involved in this great project! Ukraine has much to be proud of!
"Ukraine regains its position of missile-producing state rapidly restoring its place among rocket-builders. We are developing a sophisticated missile shield to protect our state and the most advanced missile systems for exploration of peaceful outer space," Turchynov said.