The article describes the authors’ tool to measure attitudes towards war as a means to solve international conflicts. Its construction passed two main steps. On the first step a number of items were formulated, which reflected the perception of various aspects of war. Then those items were chosen that constituted the final version of the questionnaire. The developed questionnaire comprised 6 factors (effectiveness of war, moral justification of war, economic aftermath of war, social aftermath of war, positive humanitarian aftermath of war, negative humanitarian aftermath of war), which add into a unified factor of general attitudes towards war. In the Study 1 (N=978) the results of confirmatory factor analysis showed that the version of the questionnaire that comprised 12 items demonstrated satisfactory fit to the empirical data. The multigroup analysis demonstrated structural equivalence with the use of the questionnaire in two samples: 1) man and women; 2) people older and younger than 30 years. It was found that men have more positive attitudes towards war, than women, and people younger than 30 bear more positive attitudes that those who are older than 30. Positive links of attitudes towards war with the level of right-wing authoritarianism and orientation towards social dominance in the realm of international relationships were established. In the present study the alpha Cronbach’s of the questionnaire of attitudes towards war was high (α = .87).