In the conventional sense that the US ultimately failed. Yes they managed to blow up a lot of things and kill a lot of people, but it's difficult to argue that

In the conventional sense that the US ultimately failed. Yes they managed to blow up a lot of things and kill a lot of people, but it's difficult to argue that US national interests have been improved, let alone with any durability. In some respects it's fairly uncontroversial to say that US interests have suffered a net loss.