After the Arabs conquered Persia, a few descendants of the Sasanian dynasty escaped to Tang China.
AHC: Have the Tang conquer Persia and restore the Sasanians.
AHC: Have the Tang conquer Persia and restore the Sasanians.
After the Arabs conquered Persia, a few descendants of the Sasanian dynasty escaped to Tang China.
AHC: Have the Tang conquer Persia and restore the Sasanians.
It might be easier to have some Indian dynasty restore the Sasanians. The Tang are very far away.
So during the Sasanian fall North India was under Harsha's Empire, which had one emperor only (named, very surprisingly indeed, Harsha). When Harsha died his empire just...vanished...and afterwards North India wasn't really in a position to invade Persia.
Indeed it was getting invaded, including Tang Chinese-Tibetan attacks across the eastern Himalayas.
A sea invasion makes even less logistical sense than an attack through deserts or mountains, especially when you factor in the impossibility of transporting horses that far.Honestly, I think that without some unusual circumstances, or serious efforts, that a Tang conquest of Persia is going to be difficult.
1) Because the logistics routes would have to either be by sea (which means amphibious invasion, not a good idea) or through taklamakan desert, or around its rim. Which is not practical, especially when it is so vulnerable to the steppe
A sea invasion makes even less logistical sense than an attack through deserts or mountains, especially when you factor in the impossibility of transporting horses that far.
Logistics.....think about the logistics.....