Originally Posted by
Dyroc
To be fair the blood elves hate just about everyone, and have old grudges against everyone including all the races in the horde.
First off the blood elves weren't imprisoned cart blanche, a small group of them were. Second the Kirin Tor didn't decide to imprison them, Garithos did. Dalaran happened to be the area this took place at so the dungeons there were used. Third, after the initial betrayal, that resulted in the destruction of Theramore, Aethas states that he will make any amends he can for the treachery of Songweaver, and point out the presence of traitors in any given race. Something he promptly fails to do.
So assuming Aethas isn't at fault, it would then be true that he feels he must make amends for the treacheries. It would also be true that he feels he did not do a good job performing his self appointed task of calling out traitors. So one would assume he would feel obligated to at least attempt to make amends after what has happened, but his first task would be to take care of the rest of the traitors lest such an event happen again.