9/11

That may be similar to asking why bin Laden would have carried out the 9/11 attacks when he knew it would result in the U.S. invading Afghanistan? (Ignoring Iraq.)

The answer would be because that was precisely what he wanted.

The very little material I have read suggests that an attack by the U.S. on Iran is precisely what Iran wants.

Going beyond Iran itself, it would improve Russia's situation in Ukraine, and it would give China a much freer hand in the Pacific.

Trump would probably be far more likely to fall into that trap than Biden.

Or I could be completely wrong.