They both did it, it was a joint effort, it’s one of the crazier things to happen in the national security space (which is really saying something) and every government should be scrambling to reduce dependence on—and as soon as possible get off—Starlink/shield or any Musk product, including the US.
BREAKING WSJ: Elon Musk ordered the slowdown of the military-grade version of Starlink that Ukraine relied on.