In retaliation for US sanctions over Ukraine, Russia has chosen to suspend delivering rocket engines to the US, according to Dmitry Rogozin, the director of the national space agency Roscosmos.
"In a situation like this we can't supply the United States with our world's best rocket engines. Let them fly on something else, their broomsticks, I don't know what," Rogozin stated on Russian official television.
Ever since 1990s, Russia has supplied a sum of 122 RD-180 engines to the United...
