I hope my massive lack of knowledge about pre-Modern Asian history isn't rendered incredibly obvious by this update.
556:
Roma falls under complete Godefriedi control, but Ravenna becomes the main base for the Willibaldi faction
Stavros, leader of the Syrian revolt, gets secret support from Vitiges, Ostrogothic king, and also convinces the Nestorians in Osrhoene [5] to rise up against the Ægyptians as well; Ægyptus soon loses control of Singara [located somewhere in modern Sijar District]
Fleeing the Ruru [Ruanruan/Rouran], the Tujue [Göktürks] conquer the Yuban [Yuehban/Chumuhun] and move into the Hephthalites' territory [6]
557:
The Hephthalites finally crumble once and for all after the Tujue capture the capital at Bamyan; Khosrau is able to move into and reclaim the areas of Parthia [Khorasan], Carmania [Kerman], and Gedrosia [Baluchistan], but Bactriana [approximately northern Afghanistan] and Drangiana [eastern Iran and SW Afghanistan] fall under Tujue control, who only seem to replace the Hephthalites as the menace to the east
The Battle of Arretium [Arezzo] is a Willibaldi victory, but the outcome does not solve the stalemate across the Italian peninsula
With Ostrogothic underhand assistance, all Ægyptian territory beyond the Montes Amanus [Nur Mountains] is under Catholic control
558:
With his western flank safe from opportunistic invasion thanks to the Syrian revolt, Khosrau launches an invasion of the Mazdaki territory in Arabia; Mazdakis, being pacifists, have almost no army to speak of, and they flee en masse to Mazun [Oman]
The Sabirs, a Turkic people, come out of the Steppes and begin raiding southeast Frankia and northeast Italia from a base in northern Pannonia [7]
A Godefriedi victory at Volaterrae [Volterra] threatens the Willibaldi's control over the Tyrrhenia region [approximately modern Tuscany]
An Ægyptian raid on a Catholic camp at Capernaum [on the northern shore of the Sea of Galilee] manages to capture Stavros; he is brought before Basiliscus II and summarily beheaded [8]
559:
The Sabir advance goes up the Danuvius into Frankish territory, capturing the city of Boiodurum [Passau]
Phillippus succeeds Basiliscus II as Basileus of Ægyptus
Willibaldi captures the city of Tuficum [Borgo Tufico], giving him control over most of Umbria region [includes both modern Umbria as well as Marche regions]; after this battle the civil war once again stagnates at the Montes Appenninus [Appenines]
Phillippus attempts to begin negotiations with the Catholic revolters, but their fury over the execution of Stavros leads to a refusal to negotiate and the bloody sack of Antioch [Antakya], home to a miaphysite Patriarch
560:
The Veleti begin vying for their place in Germania with the Danen [Danes] and Abodrites
A Godefriedi army lands on and captures the island of Corsica
With the Burgundians busy attacking each other, the Sabir have no trouble effectively taking control of the more distant regions of Noricum [more or less modern Austria]
A resounding Ægyptian victory at the city of Caesarea Phillippi [Banias] [9] prompts the Catholics to enter into negotiations with Ægyptus, but on Phillippus' terms [10]
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[5] While some Nestorians fled with the Buddhists into Mazdaki territory in the wake of Khosrau's persecution, many also fled to Ægyptian territory, hoping to be seen by the miaphysites under the philosophy of "enemy of my enemy (e.g. the Sassanids) is my friend," but this didn't happen unfortunately
[6] In OTL, the Göktürks managed to defeat the Ruanruan with the help of some Chinese states and other Central Asian tribes; that doesn't happen in ATL and they become another wandering tribe; they occupy what today would be considered the 'stans' in Central Asia, minus the northern territories of Kazakhstan
[7] The Sabirs have fled out into Europa after being pushed out of the Steppes by the Weihu [Uygurs], who themselves fled Central Asia along with the Tujue [Göktürks]
[8] Pope Wacianus, while otherwise distracted by the Twins' War going on in Italia, soon beatifies Stravos; Saint Stavros will become a Patron Saint of Syria
[9] Quite fitting, isn't it?
[10] Phillippus, even though he appears to be winning, knows that he can never hold down Syria indefinitely, and that attempting to do so would just be asking for more explicit Ostrogothic intervention (read as 'actually declare war')