system
A chat on 4chan
human
Peak oil, thus far a failed myth, will become a prevalent threat in the developed world for reasons I don't understand. At least, the want of energy will instill new policies among world leaders.The US falls into a very desperate state, especially among the political elite who must recover from the purges under Sulla, and will begin launching a series of conquests to secure its energy position. 
Zaunbrecher, now wielding a dual position as military commander and popular leader, proposes a new punitive attack against Mexico, mainly to secure its oil supply. Another individual proposes such an expedition to Venezuela. Many of these attacks will be perceived as defensive by Americans, for whatever reason.
One of the great battlefield innovations of the Sulla party involved a new drone integration into lighter armor units on the ground, which provided a cheap counterbalance to superior air power faced in the war, which will be used in tandem with new techniques pioneered by Russia. 
If Zaunbrecher is Caesar, he finds a counterpart and rivalry in 'American Pompey.' Whether he could be compared to Pompey, I don't know. But he reminds me of him, when I schematized it. He has the ear of Sulla, more than Zaunbrecher, and becomes the Minister of Civil Security in the new bureaucratic system of the US: the 6 Ministries under the President. This Pompey is the prime instigator of a political purge.
gpt
Other conflicts which I envisioned as erupting:
Russia's invasion of Ukraine, which will last 2 years. 
The EU-Russia border clash, a European loss which will eventually convince many new European leaders to adopt Zaunbrecher as a NATO security chief. 
Chinese invasion of Taiwan, limited in loss of life, but created a huge fear in the west for economic reasons I don't understand.
The East Africa incident: one of Zaunbrecher's expeditions will go to East Africa, and then will involve China. Zaunbrecher, outnumbered and outgunned, destroys a Chinese army there leading to new treaties.
Zaunbrecher's March Across Africa.
Zaunbrecher will be infamous in his willingness to use smaller nuclear devices against enemies which lack them, especially in the Middle East. What I can glean from the wars in that area are a little sparse, other than their immense suffering.