2054 by Elliot Ackerman

From the acclaimed authors of the runaway New York Times bestseller 2034 comes another explosive work of speculative fiction set twenty years further in the future, at a moment when a radical leap forward in artificial intelligence combines with America's violent partisan divide to create an existential threat to the country, and the world
It is twenty years after the catastrophic war between the United States and China that brought down the old American political order. A new party has emerged in the US, one that's held power for over a decade. Efforts to cement its grip have resulted in mounting violent resistance. The American president has control of the media, but he is beginning to lose control of the streets. Many fear he'll stop at nothing to remain in the White House. Suddenly, he collapses in the middle of an address to the nation. After an initial flurry of misinformation, the administration reluctantly announces his death. A cover-up ensues, conspiracy theories abound, and the country descends into a new type of civil war.
A handful of elite actors from the worlds of computer science, intelligence, and business have a fairly good idea what happened. All signs point to a profound breakthrough in AI, of which the remote assassination of an American president is hardly the most game-changing ramification. The trail leads to an outpost in the Amazon rainforest, the last known whereabouts of the tech visionary who predicted this breakthrough. As some of the world's great powers, old and new, state and nonstate alike, struggle to outmaneuver one another in this new Great Game of scientific discovery, the outcome becomes entangled with the fate of American demacy.
Combining a deep understanding of AI, biotech, and the possibility of a coming Singularity, along with their signature geopolitical sophistication, Elliot Ackerman and Admiral James Stavridis have once again written a visionary work. 2054 is a novel that reads like a thriller even as it demands that we consider the trajectory of our society and its potentially calamitous destination.