So, first priority was to invest carefully in infrastructure and trade techs to give a sound economic base from which a well trained army with superior techs would be able to quickly and efficiently roll back our neighbours whilst paying careful attention to keep our BB as low as possible by making best use out of Casus Bellis and careful diplomatic annexation.
Shaybani however seems to have other ideas...
I was as surprised as you are, i can tell you
This declaration of war brought us into conflict with Sibir and the Golden Horde as well as Nogai, and despite Shaybani's excellent leadership this was a tough fight, with the Uzbek army being very much numerically inferior to the combined enemy forces.
The grand plan of using Shaybani's main army to sweep away all resistance was a good one in theory, unfortunately we simply did not have enough troops, or enough provinces in which to build new ones to take an area once it had been pacified.
This led to several years of campaigning, the further north we went the nastier winter hit our seiging troops and the thicker and faster Golden Horde expeditionary forces came to screw up our well laid plans.
Still eventually we forced a battle in Nogai's capital that pretty comprehensively crushed the remnants of Nogai's army along with much of Sibirs and plenty of Hordish troops as well presumably.
Unfortunately as things started to look better a series of unfortunate events hit, firstly Astrakhan was now viewed as a realistic goal by some power hungry minds in Shaybani's council of war (i.e Shaybani), secondly Ak Konylu joined in the war against us and sent a large army under their best general to defend the aforementioned Astrakhan
And lastly, our weak and fearful allies, Kara Konylu decided that the Timurid Empire was in need of a good kicking courtesy of Shaybani and his merry hordes....
Still there was a silver lining to his if one could but look hard enough, afterall if we are surrounded by enemies that only means we can expand that much faster.
Less jingoistically, war with the large Timurid Empire was not as bad as it seemed, they were suffering from a series of civil rebellions and there border with us was almost entirely unfortified and Shaybani himself was already at the border on one of his rebel butchering sessions.
As such the war was swift and surgical, after all if the Timirs managed to wrest control of any sizeable part of their country from rebels then we could be in for a nasty 3 front war. Shaybani's maruaders streamed into the Timir heartland whilst some hastily assembled levies took any fortified provinces rightfully ours along the border.
With a year the Shah had folded to our modest demands of a single province and the army could be sent back north to finish the petty Khanates, who had begun to push back our northern forces, Nogai meanwhile was finished, forced into (I think) vassalge as well as losing all but their capital.
With half of Uzbek's enemies lying prone at our feet the remainder felt our wrath so hard they still soil themselves thinking about it, Sarai the capital of the Golden Horde was sacked no less than 3 times before Astrakhan was handed over. Sibir was less fortunate and lost fully half their land to our victorious troops.
Next: Notice the other peace treaty in that screenie...