Was her motive purely political, or was their an Islamically sanctioned reason? The moderators said this question was a duplicate and referred to a link that had 4 detailed answers. Most of the answers said Aisha's primary motivation was to bring the previous caliph's (Othman ibn Affan) murderers to justice. While I certainly agree that this justice should be pursued, I fail to see how this would justify organizing a revolt (fitna) against Ali.
Ever since this revolt, the ummah have been in turmoil and never had a legitimate Islamic government. The entire history from this point to the present day all we see are tyrants who either inherited rule in a dynasty chain or by violent conquest. Neither of which are sanctioned by Islam.
Again, was there an Islamically sanctioned reason for Aisha's fitna against Ali?