"They've been under incredible stress for five months, give them a break," Errol Musk said while attending a forum by Putin's ultranationalist ally in Moscow.

Officials offered to mediate and even asylum for Elon Musk as many commented how a leader falling out with a top businessman was familiar to Russia.

The feud between Donald Trump and Elon Musk provoked chatter, mockery and amusement among the ruling class in Moscow, where one senior official joked about hosting peace talks and another said Musk should bring his businesses to Russia.