I have Started reading Hamilton's Principle or Principle of Least Action In first course of Undergraduate classical mechanics. So, I think it becomes easier to apply the Variational principles if forces can be expressed as generalized potentials.
So my first question was, $ Is\ it\ possible\ to\ express\ all\ Fundamental\ Forces\ in\ nature\ in\ the\ form\ of\ \\ generalized\ potentials\ ? $
The Question seems very objective with YES/NO Answer. But this is not my intention.
I am hoping for some detailed answer. If you can't then why? and what are further insightful consequences.