US didn't achieve any of the goals it stated during any part of the war. The "goals" it achieved were largely a restoration of the status quo ante, modulo an enormous new revenue stream for Iran.

US spent vast amounts of money on not achieving any meaningful objective, while at the same time granting the opposition items from their long-term wish list (removal of sanctions). That's a loss.

If Iran's leaders' brains are not made of rotten oatmeal, they will massively accelerate their nuclear weapons program with their windfall.