How did the Peace of Boves change Philip II Augustus’s relationship with the count of Flanders?

The Peace of Boves, signed in July 1185, served as a diplomatic resolution to the conflict between Philip II Augustus and the count of Flanders, Philip of Alsace.1

Prior to this agreement, the count of Flanders had allied himself with the Champagne faction, leading to a serious revolt against the king. The primary point of contention between them was the possession of the Vermandois region in Picardy.1

The Peace of Boves changed their relationship by settling these differences through a partition of the disputed territory:
* Amiens and several other locations were ceded to the king.1
* The remainder of the territory, including the county of Vermandois proper, was left provisionally to the count of Flanders.1

By composing these differences, the treaty effectively ended the internal conflict, allowing Philip II to secure his position and subsequently turn his attention toward his rivalry with Henry II of England. The terms were later confirmed by the Treaty of Gisors in May 1186.1