The importance of peace and security in creating the proper atmosphere for regional integration in all aspects has been recognized. Nevertheless, the situation in the EAST African region in the recent past has been characterized with security concerns. The EAC has tried its best over the years, but this is done amidst mistrust and suspicion stemming from past experiences that led to the 1977 breakup. Today, the formation of a regional security community is requisite for regional stability. Though defence diplomacy has mentioned to have contributed to security communities elsewhere, in the framework of the EAC, its role has not been investigated. The purpose of this study was to examine the role of defence diplomacy in the creation of the East Africa Security Community.