Well, Konstantinos IV having to pay protection money to the Bulgars wasn't really his fault - he was driving them back across the Danube, then the whole episode of his gout happened and his army kind of collapsed all on its own, with Asparukh sitting there in the Danube delta swamps wondering what the hell had just saved his people from being annihilated. He did turn Mu'awiyah's formidable fleet into fish food and badly mauled the Arab army that tried to besiege Constantinople, and successfully shredded a Slavic invasion around Thessalonika. Besides, he was able to offset the Bulgar tribute issue (which was a small tribute anyway) by fomenting a Bulgar civil war and then accepting the losers into his empire as converts and manpower.Didnt Konstantinos IV have to pay protection money to the Bulgars? Konstantinos IMO really didn't do much to stop the falling pieces of the Empire. Though you can't blame him. The Slavs were on their gates, the Italians were revolting and the Pope was slowly making the EME lose all its Italian Provinces.
Butterflies, homes. Who says they even get that far? The Sassanians could instead end up beating them like they did to the Hephthalites.aronnax said:Would it not be possible that Turks attacked the Persian empire again? They did it three times before already and the Persians are like the mortal enemies of the Turks. It would not be suprising if they headed south again. I dont see how the establishment of Islam leads to the Turks invading from the North.