Question

Is the attraction/repulsion force between charges/magnets due to BOTH charges/magnets?

Answer 1

When two charges attract or repel the force is due to BOTH of the charges correct?
And when two magnet's attract or repel the force is due to BOTH magnets?

Answer 2

@gleem @electrokid @Mashy

Answer 3

by charges do you mean (magnetic) poles? the term charge are used only in a electrostatic context not magnetic.

Yes the the interaction of two magnets is due to the individual interactions of the poles but this is hidden in the field lines which is the combined effect of both poles for a magnet(A). When another magnet(B) is placed in this field its poles are affected by the field of magnet(A) at the positions of its poles in the field of (A)
The diagram shows the field of A affecting the poles of B producing a force that pushes the two magnets apart since the longitudinal forces cancel . You could reverse the situation and have B's field affect A's poles and the net force of B on A would be the same as above even though B's field might be stronger or weaker.