Every nation in the world is my ally. I'm exporting billions of dollars worth of everything but uranium (of which I have none and need none) and electricity (which I buy off the market at about $300k/day.) I recently just sold fresh water to Saudi Arabia. Cost me about a billion dollars to produce it, and they paid 50x that. I sell oil to Japan and Korea, food and water to the Middle East, South America, west and southeast Asia, and Africa, consumer and industry goods to Europe, Oceania, and the rest of North America. I burn through $5bil/day on social and research spending, but it's whatever. When I run out of money, I just sell off some of my stockpiles. I make food, water, oil, and various goods faster than I can sell them, and I sell daily.
The only nations that didn't join my friends list are North Korea, who got unified and wiped out by South Korea (using arms and munitions supplied by Michigan,) and Illinois, who attacked me to get to Canada and got crushed under the combined boots of WI, IN, OH, KY, and MA.
Next up, figure out how to buy the world. I'm sitting on $100bil. If all else fails, I suppose I could use force, but I don't want to. Who would be left to buy my stuff?
Supreme Ruler 2020.