You're about to do something that'll make headlines. Briefly, anyway—until it gets stomped down with the rest of the "news" in the daily cycle, relegated to the back pages while propaganda fills the front matter. (Haven't you heard? You live in the greatest nation in the world!)
Well, there isn't much competition. The unimaginatively named Panwestia started with America's annexation of Mexico and Canada and eventually grew to cover the entire Western hemisphere.
Launching surprise attacks from Alaska, Panwestia attempted to gain a foothold in eastern Russia and establish military bases along the Kamchatka Peninsula. Panwestia currently threatens both Eastern Russia and Japan.
As painful memories of past World Wars begin to swirl, all three countries are doing everything they can to find a peaceful resolution. But Panwestia's leaders won't accept anything but total surrender.
They've prepared in a way that no other country ever has. Their victory is ensured (if potentially bloody) due to a burgeoning Space Army.