This study examined conflict management in the Niger Delta using the Amnesty programme as case study. It explored the nexus between the amnesty programme via Disarmament, Demobilization and Reintegration granted to the Niger Delta militants and installation of peace in the Niger Delta between 2009 and 2015. The study adopted inferential research design in carrying out the research. The population consisted of ex-militants. The sample size comprised 200 respondents. Questionnaire was developed and used as instrument for data collection. In analyzing the data collected from the respondents, simple percentage method of data analysis was adopted for demographic data. Inferential statistical analysis was used to analyse the data. The study found out that government approach to conflict management in the Niger Delta through the Amnesty programme between 2009 and 2015 contributed to the relative short time peace in the Niger Delta. Unfortunately, the mismanagement of the programme gave birth to the Niger Delta Avengers who resurfaced in the post-Amnesty period. By viewing militancy as direct threat to national security, the findings recommend that government response to should be as complex as the threats to produce meaningful results. Ironically, since militancy seemingly undermine the sovereignty of states, confronting them will mean that Nigerian national security community must fully integrate and harness the elements of its own national sovereignty—diplomacy, information, military, economics, financial, intelligence and law enforcement (DIMEFIL).