Synonymous with Nigeria is a deep political cleavage, which causes major political issues to be violently contested along the lines of intricate ethnic, religious divisions. Although efforts have been made to change these narratives through political reengineering and public policy process, but all have failed to achieve the desired goal of national unity and security. Of what degree is the threats of internal crises to the existentiality of Nigeria? How best can the use of public diplomacy help mitigate the danger of Nigeria’s internal crises? Fundamentally, public diplomacy has the capability to transform a country’s socio-political and economic assets, while reversing the negative attitude of people towards these assets if handled very well. Using relational theory, the conflicts and hostility towards others is explained in relation to socio-economic, political, cultural, and religious intolerance amongst the ethnic groups that make up Nigeria. The findings shows that the inability of Nigeria leaders to put the interests of the diversity of Nigeria first and respect the sensibilities of a fragile nation grasping for survival is the worst political crime, ever committed against the country. Concluding that inclusive collaboration and not unhealthy socio-economic and political competition would bring the ethnic groups in Nigerians closer than ever before.