Donald Trump has unleashed on former MAGA mate Elon Musk, accusing him of being a “train wreck” and “off the rails” in a searing Truth Social post. The latest spat between the president and the richest man in the world has flared up after Musk officially fied paperwork to start his new “America Party”.

Donald Trump has lashed out at Elon Musk after the billionaire unveiled plans to launch a new US political party, calling him a “train wreck” in an escalation of the feud between the US president and his former ally.

Trump said third political parties "have never succeeded in the United States" because "the system seems not designed for them."