On 27 June 2013, Vetëvendosje organized a protest against the ratification of the agreement between Prime Minister of Kosovo Hashim Thaçi and Prime Minister of Serbia Ivica Dačić during the latest round of political negotiations between Pristina and Belgrade in Brussels hosted by Catherine Ashton. Vetëvendosje tried to block all entrances to the parliament building, in order to hinder the assembly members from entering, thus preventing the agreement for being ratified. The protest didn't succeed, and the agreement was voted from the majority of the assembly representatives. During the protest, U.S. Ambassador Tracey Ann Jacobson resulted with an injury on her right arm while entering from a secondary entrance together with some assembly members. Although the video evidence showed no physical contact between protesters and US Ambassador, confirmed as well by LDK assemblyman Haki Demolli who entered the building together with the Ambassador, the incident aggravated the already difficult relationship between the U.S. State Department and Vetëvendosje. The reaction was prompt, following the US Embassy official statement, Vetëvendosje was criticized by Kosovo government instances, political factors, as well as public opinion. Even long-time supporter of Vetëvendosje, former OSCE ambassador Willim Walker, described the action as a "big mistake". According to "Zëri" newspaper, the U.S. State Department called Kosovo's Ambassador in Washington, D.C., Akan Ismajli, requiring official explanations, though no comments came from official sources within Kosovo.