During this period, several rounds of talks were held with international facilitation. Between October 2012 and May 2013 Deputy High Representative Roderick W. Moore launched an 8-months mediation effort that produced a compromise framework aimed at merging the city areas (and central zone) into multi-ethnic voting districts. This was endorsed by the Peace Implementation Council’s Steering Board (PIC SB). Yet, the proposal found no political support when it was submitted by Moore's successor Tamir G. Waser in July 2014 to the BiH Parliament. A second mediation attempt led by US and UK ambassadors to BiH, Maureen Cormack and Edward Ferguson, and based on a model with a single city-wide electoral district, also failed 2017. In 2018, the two main parties HDZ BiH and SDA autonomously negotiated a compromise solution, based only on a formula for the election of the councillors from each city area along the "one man, one vote" principle, which would be later taken up in the June 2020 agreement.