In my talk, I will discuss the interaction between charged surfaces that are in contact with an electrolyte solution composed of divalent rod-like ions. The Poisson-Boltzmann theory will be applied for short divalent rod-like ions. It will be shown that attraction between like-charged surfaces above a critical distance between the two individual charges of the divalent ions is obtained. At the end, an outlook for possible extensions of the problem will be given.