The Transformers: The War Within #4

At the very heart of Cybertron, Optimus Prime and Megatron battle, with the future of their own world, and countless others, at stake. But neither combatant is truly ready for the power of the Matrix unleashed! And above, as the Autobot defenses buckle under sustained Decepticon assault, Starscream prepares to unleash the ultimate weapon: Cybertron itself! With shocks, surprises, and a tantalizing hint of things to come in store, you dare not miss this issue!