I want to know the answer to the following question:
When did the Rus return to Byzatine seeking revenge?
All the background I'm provided with is that "The Byzantines may have been motivated to enter the treaty out of concern of a prolonged alliance of the Rus', Pechenegs, and Bulgarians against them, though the more favorable terms further suggest a shift in power.". Is that enough to answer the question?
Answer: no