I watched the below video on what does assertive behaviour looks like.
https://www.youtube.com/watch?v=mKNUC0avNgg
The video is good one. It shows one employee taking some clarifications from his manager who was initially rude but later on her tone got better after the assertive communication attempted by him. What I understood is that assertive communication at workplace means being politely aggressive on whatever is required to get your work accomplished. In case of any resistance from the other employee, communicate to him that you do understand his point but still this is required to get the work done so should be done.
Anyone has any views on whether this is the right meaning of assertive behaviour at workplace or wants to add anything?