Thank you so much! That was a fantastic read. As others have noted, the character development is superb given the length of the story. I found the story to be very engaging and I was hooked by the end of page 2.
At the risk of being "that guy", I have one very minor nitpick about the sentence at the top of page 97 (96?) that reads "... the second President in history to authorize the use of thermonuclear weapons...".
Very technically, the bombs dropped on Hiroshima and Nagasaki were single stage fission bombs. Thermonuclear weaponry refers to multistage fission / fusion devices, aka "H-bombs". So very technically, the President in the story would be the first President in history to authorize the release of thermonuclear weapons. Replacing "thermonuclear" with simply "nuclear" would remedy that supremely minor inconsistency.
Again, I'm not trying to be "that guy". I'm just offering some friendly critical feedback. I thoroughly enjoyed the story and I look forward to the next one!