Elon Musk personally rejected a Ukrainian request to extend his satellite internet service to Crimea, the SpaceX CEO fearing that an effort to retake the peninsula from Russian forces could lead to a nuclear war, according to a report published Tuesday.Following Russia's February invasion of Ukraine, Musk — and the US government — provided Kyiv with thousands of Starlink systems, enabling Ukrainian forces to communicate in what were previously dead zones.Last week, the Financial Times reported that the service was suffering "catastrophic" outages on the frontlines, prompting speculation that it had been shut off in areas controlled by Russia — perhaps to prevent the Kremlin from itself exploiting the network.Musk, speaking to Bremmer, said that he had been asked by Ukraine's defense ministry to activate Starlink in Crimea, which was invaded and illegally annexed by Russia in 2014.Russian forces are losing ground in Ukraine's south and have lost huge swathes in Ukraine's east as they press into regions Russia declared it had annexed, sparking concern among arms control experts about whether Putin and his top advisers may contemplate an attack with a nuke from their vast arsenal in an attempt to stanch their losses."