External intervention and political developments in the Horn of Africa

What is driving the renewed interest in the Horn, and what is the impact of this attention on domestic and regional stability? What are the costs and gains to the Horn and, more broadly, to Africa? With transactional and transitory interests at play, where do recent developments leave the region?
This discussion at the International Institute for Strategic Studies in London on 20/09/2018 featured Rashid Abdi, Mary Harper and Martin Plaut.