Though basic elements of the Dayton Agreement were proposed in international talks as early as 1992, these negotiations were initiated following the unsuccessful previous peace efforts and arrangements, the August 1995 Croatian military Operation Storm and its aftermath, the government military offensive against the Republika Srpska, conducted in parallel with NATO's Operation Deliberate Force. During September and October 1995, world powers (especially the United States and Russia), gathered in the Contact Group, pressured the leaders of the three sides to attend settlement negotiations; Dayton, Ohio was eventually chosen as the venue.