Cold War era, Hearts of Iron IV game, Iron Curtain mod, strategic map, military units, tanks, aircraft, navy, soldiers in uniform, political leaders, historical figures, 1950s to 1990s, global tension, nuclear threat, espionage, diplomacy, alliances, realistic textures, detailed terrain, dynamic weather, political map mode, full-body view, top-down perspective, ambient lighting, high-resolution textures, complex strategy, geopolitical simulation, in-game events, historical accuracy, iconic landmarks, world domination, superpower rivalry, intense gameplay, Cold War aesthetics, immersive atmosphere, military strategy, real-time tactics.