NOTE: This thread is meant for pure fun and speculation. I wanted it under the lore sub forums because I want the answers to actually be based on lore and what would be likely.
So, let's imagine Tyria, x years from now. Let's imagine the charr have sorted out their ghost problem, and possibly found a Khan-Ur to unite them. Let's say the truce falls apart due to one reason or another, which would result in another open war versus humans.
How would each faction react to this? Would other races go support the charr or the humans, assuming their earlier grievances with either race? Who would stay neutral? What would be the outcome?