Abstract
<jats:p>The study examines the peacekeeping component of the United Nations activities in the regional security sys-tem of the Red Sea and the Gulf of Aden. Particular attention is paid to how the classical model of peacekeep-ing is transformed under the influence of hybrid conflicts and the rise of transnational terrorist threats. The aim of the study is realized through a key case analysis of the African Union Mission in Somalia (AMISOM), imple-mented under the mandate and with the institutional support of the United Nations. The study employs institu-tional analysis and the case study method focusing on AMISOM, which makes it possible to trace the evolution of the mission, its military and political outcomes, as well as the challenges associated with the functioning of the partnership model of peacekeeping. The research demonstrates that AMISOM has become one of the most large-scale examples of delegating peacekeeping functions to a regional organization with logistical and politi-cal support from the United Nations. It is also established that peacekeeping operations in conditions of hybrid threats are capable of altering the operational balance of power and preventing the collapse of state institu-tions; however, their capacity to transform the conflict itself remains limited.</jats:p>