Combustion can create energy by breaking/creating bonds between atoms via the electromagnetic force to produce a resultant lower energy system. Nuclear fusion and fission processes can create energy by producing particular nuclei which are more stable than their precursors via the strong force which lowers the resultant system's energy.
Matter and its corresponding antimatter can create energy by annihilation. But what is the force that mediates this process? Why does this force not operate similarly during matter-matter or antimatter-antimatter interaction?