Tech billionaire Elon Musk called on Wednesday for Volodymyr Zelensky to “go” as Ukraine’s leader, after insisting any disruption to the war-torn country’s use of his satellite communications system was the fault of the US government, not his company.

The comments came as Kyiv raised doubts over US support for Ukraine in its war with Russia, accusing Washington this week of helping Moscow by failing to warn it of incoming missile strikes and hobbling Kyiv’s military response through changes to the SpaceX-designed system it uses for communications.