He hasn't ordered an attack just yet. He's ordered assets to move into position incase he orders an attack.
This may just be posturing to force Iran to capitulate, or at least negotiate back door from a weakened position.
The fact Trump has said he wants to invite Iranian negotiator to the white house (an unprecedented move) is evidence that Trump may not be comfortable with actually becoming a war time president, something he's ranted and railed about.
His MAGA voter base is already split on this issue, and it could mean the death of his political future if he goes through with this. There are already indications that he may face a revolt within MAGA, and potential impeachment charges if he does this.
He had a decision to make, and he's likely to face the harsh reality of the extremism he's fostered within his own party no matter what he chooses.
