[quote=@Airalin]
Dead people have no authority, so assassination attempts kind of do count. And unless he's going to accidentally undermine her authority, he needs to try to succeed. =p
[/quote]

Attempt is the key word. If he succeeds, he's fine, cause it wasn't a try but a full blown success. If he had sworn "not to undermine" authority would be a different thing altogether. 

Besides "accidents" do happen, right...