The times, they are a-changin'
Winter, 1959 A.D.: The Norse army turns East for Mytilene, where most of the Greek reinforcements are already entrenched.
As they approach Mytilene, the Norse army is surrounded by Greek forces storming out of the South and Southwest into the DMZ. Despite being attacked from all sides, the Norse troops including the legendary 1st Infantry dig in and weather the initial push, then drive the Greek forces back in an immediate counterattack. The Greek gambit has failed, and this battle is largely seen as a turning point where the NDU's momentum changed the course of the war.
1960 A.D.: Russia, hearing of the crushing Greek defeat at Mytilene, becomes a signatory NAPA nation. At their first meeting as a member, they reveal that they have launched the world's first manned space mission.
Uh-oh. That is a distressing little piece of historical accuracy there. Russia has completed the Apollo Program, which allows you to start building spaceship components. The first person to build all four of these wins a Science victory. Luckily, I'm still way ahead tech-wise, and you need to almost max out the tech tree to construct all of the required pieces. Plus, Greece is now alone. The Axis is broken, and the Scourge of the West is now nearly at my mercy.
Due to the overwhelming success of Operation Justicar and Operation Firebrand, a new plan is launched by the NDU's Great General at Graz: Operation Redeemer. Its goal is to reclaim the once-magnificent Austrian capital of Vienna from Greece, and bring it under Norse rule.
Summer, 1961 A.D.: Norse SB-61 bombers dodge outdated Greek triplanes and hit a Greek counterattack aimed at Tunsberg hard. To the East, Most of the Greek forces stationed around Vienna are wiped out in the initial wave of Operation Redeemer.
Back in the heart of the NDU, the Stockholm Project is completed. Once an effective, fissionable isotope is identified, the Norse will have nuclear arms.
I still need to wait two turns for Nuclear Fission to finish researching, and then I actually need to build the bomb. But at this rate, it's going to be the icing on my victory cake, not a key ingredient in baking it. Though it is likely to bake a lot of things. Mostly Greek cities.