To honor the end of Elon Musk's "incredible" government service, President Trump presented his friend, adviser and billionaire benefactor with a golden key to the White House. • Six days later, Musk lit the place on fire.

Why it matters: The most powerful civilian ever has effectively declared war on the president of the United States, incinerating their relationship — at least for now — in one of history's most extraordinary political meltdowns. • The long-predicted rupture built over months, but exploded in hours — unfolding in real time in the Oval Office, on Truth Social, and above all, on X. • The consequences were tectonic, shaking the foundations of a MAGA-tech coalition that has mapped out grand ambitions for Trump's second term.

Catch up quick: Tensions have simmered all w

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