According to the source, the entire Cruz speech was cleared by the Trump campaign. Paul Manafort, Trump’s campaign manager, expressly approved the speech at 4:30 PM ET. The source, who was standing on the convention floor at the time of the speech, said that Trump operatives were present, urging the crowd to boo. “This was orchestrated by the Trump campaign to make Senator Cruz a pariah within the party,” said the source.

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In fact, the source added, a few hours before the speech, the Trump campaign had been in negotiations with Cruz for Cruz to play a larger role in the campaign, including advising on Israel policy. Minutes after the speech ended, the source noted, the Trump campaign instantly informed them that the offer had been withdrawn.

This is a classic psychopathic response. Trump can’t properly prioritize between the benefits of tearing Cruz down vs. building the GOP as a team up. He doesn’t care how much damage he inflicted on the brand or party unity with that stunt, he thinks he managed to embarrass and harm Cruz and in his view harming a rival is emotionally indistinguishable from personal success. This was just another Prisoner Dilemma test that Trump failed by chasing harm to others as its own reward.