"Russia dosent make anything" Duh! What exploded was a 40 year old Russian engine. Why?
"An Orbital executive complained there aren't more modern alternatives.l to the decades-old engines, the Guardian reported. "When you look at it there are not many other options around the world in terms of using power plants of this size," said Frank Culbertson"

However the Russians were able to launch a backup from the same Baikonour Cosmodrome in Kazakhstan that the US com satellite companys employ, using modern Russian equipment.