This is exactly my initial impression when I read Trumps tweet, there must've been some backdoor deal between him and IRI to do some performative quick strike so Trump can claim mission accomplished and bring this situation to a close. No way he actually managed to destroy Iranian nuclear program completely, especially not this quickly and quietly in such short order without anyone even noticing despite everyone's attention being focused on the region. Nothing else would makes sense to me right now, it had to been performative.