what anakin is referring to here as i see it is betraying a friend... it's about comeradeship and trust. it's probably a very general code of ethics. i'm sure obi wan feels that anakin has a point. but at the same time, anakin doesn't see the greater picture as obi wan does. but what obi is interested in is showing support because he knows how difficult this is for anakin. a lecture on the exceptions and special circumstances isn't what anakin need right now.