brinksmanship

brink·man·ship also chiefly US brinks·man·ship /ˈbrɪŋkmənˌʃɪp/ /ˈbrɪŋksmənˌʃɪp/ noun

[noncount] : the practice of causing or allowing a situation to become extremely dangerous in order to get the results that you want
▪ two nations caught up in nuclear brinksmanship ▪ engaging in political brinkmanship