Yey Dawnbreaker! Easily the best sword in the game.

Now for the Diplomatic Immunity quest - and we finally find out who Delphine has found to steal stuff from the Thalmor?!?...and I've just realised that question has an obvious answer, it's a member of the Thiefs guild isn't it.

Brynjolf perhaps, or maybe Karliah? And that will setup a follower to accompany Elisif if she has to go to Riften to find Esbern - after all she'll need all the help she can get, that's Stormcloak territory!