As Celestia can attest, nothing is ever simple. A stallion may walk through a portal in a huff and everycreature may cheer his departure, but that doesn't make him any less of an important functionary in the greater scheme of things. And so, while the Princess of Friendship can handle the straightforward task of averting world war, Celestia must shoulder a heavier burden.

She has to convince a bureaucrat that he made a mistake.