Creative ambiguity as a negotiation strategy is used often in peace agreements and refers to when ambiguities are used in agreements to serve as a positive motivation to get over obstacles. While it has many positive impacts, the use of creative ambiguity also often times shifts the burden of the negotiation phase to the implementations phase, and thus can result into agreements that are not implemented as well as plummeting the relations between the parties affected. This thesis aims to understand how the use of creative ambiguity in the Brussels Agreement between Kosovo and Serbia had an impact on the heightened conflict between the countries. This thesis is a single instrumental case study that illustrates the issue of creative ambiguity through the case of the Brussels Agreement. Through analysing interferences from material mainly collected from both countries’ government websites, this study conducted that the use of creative ambiguity had a harmful impact not only on the relations between Kosovo and Serbia, but also on the implementation of the agreement.