I like the definition of leadership offered; it reflects much of my own experience working with good leaders and articulates well the combination of collaboration, political practices that are so necessary.  Although I haven't heard leadership described in the way before, all of the strands resonate with me and I can see how the right balance of all the eight elements will ensure leadership success.

I also believe that some words and phrases, often associated with leadership, have become over-used, such as vision, influence and buy-in, and it is refreshing to read a new definition.  

Whilst I would have used the word 'vision' before when describing a great leader, I now feel that the leader does not have to be the initiator of the vision, but can translate the required deliverable to be developed through collaboration and participation, rather than in isolation.