Previous cross-cultural research has not undertaken in situ analysis of conversational style between groups in severe political conflict. The present study is a quantitative and ethnographic study of conversational interruptions in one Israeli-Palestinian 'dialogue' event which took place during the Palestinian Uprising. Findings indicate that the previously documented divergent cultural styles of the two groups underwent a process of change. Specifically, the Israeli dugri interruptive style dominated interactions between Israelis (intragroup) and between Israelis and Palestinians (intergroup). However, fewer interruptions were found in the intergroup interaction. Conversely, the Palestinian musayra style of non-interruptions was more significant in the intragroup Palestinian-Palestinian interaction than in interaction with Israelis, where Palestinian interruptions dominated. The political context of events and the erosion of the musayra style are suggested as factors that explain results. Implications are discussed.