President Trump’s decision to pull a close associate of Elon Musk’s out of the running to lead NASA helped doom an extraordinary partnership.

The Whole Mars Catalog replied: “ nothing wrong with being a little horsey every once in a while .” Ketamine is often used as a veterinary anesthetic, especially for horses. Aside from ketamine, the report from the New York Times claimed Musk has been using Ecstasy, psychedelic mushrooms, and the prescription medication Adderall.

As Mr. Musk entered President Trump’s orbit, his private life grew increasingly tumultuous and his drug use was more intense than previously known.

A timeline of the praises and insults that President Trump and Elon Musk have lobbed at each other shows how their volatile clash was years in the making.