If, on the other hand, you feel you are a more effective leader if you stay abreast of developing news, but doing so is not part of your job duties, then subscriptions to various newspapers are not "necessary" for you to do your job and would not be reimbursable.
This is a discouraging factor for employees, employers and office holders to develop ancillary skills that would improve their work because training, materials, and courses for such are not considered entirely "necessary" to do the job. The government then sits around wondering why per employee productivity growth has flatlined when self-improvement and education, even entirely within the scope of someone's job, is often a taxable benefit.