Command & Conquer: Red Alert 3: Uprising/Greed of the Vanquished

Phase 1
Follow the mission plan to capture soviet base

Phase 2
On medium difficulty, the soviets will not attack your base. Build up an airforce and take over the western base. Move your forces to the left and take over the ore mine and the shipyard slightly south of it.

Finally move on to the main base. Prioritizing reactors will disable the defensive structures.

Despite being cut off from ore, the soviet will still be producing enough units to overwhelm the co-commander's land forces as well as replace any destroyed buildings.