Read Eshonai interlude in the following link:
http://www.17thshard.com/forum/topic/3710-words-of-radiance-readings/
It's written from the viewpoint of a Parshendi
Just to clarify, the present theory is that Nan Helaran is the shardbearer who Kaladin killed. This is also likely the Asmodean reference to which Brandon made a reference. Read the timeline of both incidents. Kaladin kills the shardbearer nine months before and Nan Helaran also disappears...