The overall success of international conferences depends on how their participants understand the need to bring their own priorities, values and goals in line with the priorities, values and goals of others; readiness to harmonize their national stance, and to convincingly express it through their speeches. Informing about the stance of their state on a particular issue and urging the effectiveness of the proposed method solution; supporting or criticizing partners' stance, participants of an international conference seek to influence partners' consciousness and make changes in the system of their needs, interests, values and priorities. This goal cannot be achieved using only rational means and methods of influence (e.g. logical and rational arguments), disregarding means and methods influencing the emotional sphere of consciousness. The diversity and complexity of issues under discussion (national, religious, political, etc.) as well as specific character of relationships between the participants of the conference (e.g. the degree of mutual confrontation) frequently make speeches more or less emotional. This article examines the role of the emotional component in public persuasive speech and linguistic means forming and regulating the degree of speech emotional expressiveness. © 2017 Serials Publications.