The Implications of South Sudan's Secession on Arab National Security – Egypt as a Model

The secession of South Sudan from the North in 2011 represented a historical turning point whose repercussions were not limited to Sudan's internal affairs but extended to cast their shadows on Arab national security in general, and on Egypt in particular.Sudan has long been, due to its strategic geographical location and its historical and cultural ties with the Arab sphere, a strategic depth for Egypt and a gateway to the Horn of Africa.Therefore, the fragmentation of Sudan did not only create a political vacuum but also raised a set of security, economic, and political challenges that require in-depth analysis to understand their dimensions and their impact on the vital interests of Arab states.This article aims to review and analyze the implications of South Sudan's secession on Arab national security, focusing on Egypt as a case study, by examining the direct and indirect repercussions on its water security, borders, and regional stability.