Fantastic Four (1961) 200-A

Chapter 1: "When Titans Clash!"
Chapter 2: "Beginning of The End!"
Chapter 3: "At Long Last, Defeat! At Long Last, Victory!"
Epilogue: "Latveria: A Nation Anew!"

Doom is off to the UN before their final vote to remove Latveria from the corrupt organization. After he leaves, the FF escape their prison as Reed figures out what Doom is up to. The FF must get back to New York to counter Doom's plan.

Chapter 2: Beginning of the End
Reed reaches Doom's laboratory in New York as he goes in to stop Doom but Doom is not that easy to catch. Doom has set a series of traps that Reed must navigate in order to get to the super villian.

Chapter 3: At Long Last Defeat! At Long Last Victory!
The final piece is in place as Doom turns on his statue and takes control of the minds of the UN Ambassadors who take their hands out of the coffers and turn them against the FF. Meanwhile, Reed escapes the traps and confronts Doom in the crystal room that Reed helped to create. Reed manages to pull Doom's mask off, exposing Doom to the refractions of the crystals which drives him mad. With Doom's defeat, Reed turns off the control beam that releases the Ambassadors and turns control of Latveria over to Zorba and the people.