The Horn of Africa… The Geography That Never Sleeps.. Episode Two of Mengistu and the Cold War: How Was the Structure of Conflict Formed in the Horn of Africa?

Abdel Aziz Yaqoub

Not all geographies are merely maps and silent borders. Some places are crossed by history in passing, while others are inhabited by history itself, which repeatedly rewrites its story across their terrain generation after generation. The Horn of Africa is one of those regions that seems to have been born on the edge of perpetual tension: neither fully stable nor completely collapsed, but suspended between statehood and chaos, between sea and river, between imperial ambition and the fear of fragmentation.

As we noted in the first installment of this series, this region — stretching from the shores of the Red Sea and Bab al-Mandab to the Ethiopian Highlands and the Nile Valley — has never been a distant periphery to the movement of the world. Rather, it has remained one of its most sensitive and volatile crossroads. Whoever approaches the Horn of Africa is not approaching a limited local geography, but a knot where trade intersects with energy, migration with security, water with ports, and international influence with a long history of latent conflict.

For this reason, the region was never left outside the calculations of major powers. Here, ports, borders, and rivers become instruments of influence and conflict that transcend their traditional geographic meaning, while the state itself becomes part of the equations of seas, waterways, and strategic corridors.

With the second half of the twentieth century, the Horn of Africa entered one of the most turbulent phases in its modern history. The Cold War cast its heavy shadow over the region’s historical contradictions, transforming it into an open chessboard between Washington and Moscow, where military calculations, intelligence operations, and maritime interests converged.

The regime of Gaafar Nimeiry drew closer to the United States, while Mengistu Haile Mariam became one of the Soviet Union’s most prominent allies in Africa after taking power in 1974.

From that moment onward, relations between Sudan and Ethiopia ceased to be merely a matter of neighboring states. Instead, they became an extension of a broader international struggle in which ideology intertwined with ports, security with borders, and influence with weaponry.

Mengistu attempted to reshape Ethiopia into a rigid centralized state under the banner of Marxism. Yet he faced a country of immense complexity — one marked by multiple ethnicities, identities, and local histories. In order to consolidate his authority, he built a harsh security apparatus, launched sweeping campaigns of repression, and fought prolonged wars against Eritrean movements and Ethiopian opposition groups, particularly in Tigray.

But however solid a security grip may appear, it often conceals cracks widening silently beneath the surface until the moment of explosion. States governed by fear may seem powerful outwardly, yet they gradually erode their own internal cohesion without realizing it.

Meanwhile, Ethiopia supported the Sudan People’s Liberation Movement (SPLM) led by John Garang, providing it with training, weapons, and logistical support. As a result, the civil war in southern Sudan evolved from an internal conflict into part of a complex web of regional struggles, known at the time as something akin to a “belt of popular armies” backed by the Soviet Union and its allies in the region.

Khartoum, however, did not remain outside the game of counterbalancing alliances. Sudan hosted, to varying degrees, Ethiopian and Eritrean opposition factions, including the Eritrean People’s Liberation Front and the Tigray People’s Liberation Front, along with other movements hostile to Addis Ababa.

This was not merely a temporary political maneuver. Rather, it represented Sudan’s first line of strategic stability and reflected a longstanding professional Sudanese intelligence understanding: instability in Ethiopia rarely remains confined within its own borders. Instead, it quickly spills across tribes, markets, refugees, and weapons routes until it reaches Sudanese territory itself.

During the 1980s, Sudan’s eastern border transformed into an open artery for both war and survival.

Ethiopian and Eritrean refugees crossed into Sudan fleeing famine and conflict, while armed groups moved in the opposite direction in search of funding, power, alliances, and weapons.

Thus, borders no longer separated states as much as they became gray zones where the state merged with the tribe, politics with survival, and war with famine — until the entire Horn of Africa seemed trapped within a continuous cycle of anxiety and mutual tension.

In 1991, Mengistu’s regime collapsed after years of military exhaustion, intelligence warfare, economic decline, and international isolation. His downfall was not simply the end of a ruler, but the collapse of an entire model that had sought to subdue Ethiopia’s ethnic diversity through hard power and a security-heavy state.

Two years later came an even more consequential transformation: Eritrea achieved independence, depriving Ethiopia of direct access to the Red Sea for the first time in centuries. To a considerable extent, this outcome was the product of a long process of political and intelligence work that had begun during the Nimeiry era, before later Sudanese authorities reaped some of its strategic benefits.

This was not merely a border adjustment, but a moment that reshaped Ethiopia’s entire strategic consciousness. A state long accustomed to seeing itself as the heir to a historic empire suddenly found itself landlocked, protected only by geography and dependent on the ports of others in order to breathe economically and move commercially.

From that moment onward, the Red Sea ceased to be merely a maritime route in Ethiopian strategic thinking; it became an existential obsession tied to national security, state prestige, and regional ambition.

At the same time, Ethiopian elites began to restrain some of their imperial aspirations and reassess the other sources of power still available to the state. If the sea had slipped from direct control, the Blue Nile remained Ethiopia’s most important geopolitical card.

Here, in this restless region, water is no longer simply a natural resource. It becomes an instrument of power, a tool of influence, and part of the very equations of survival itself.

Thus, with the end of the Cold War, the Horn of Africa entered a new phase.

Ethiopia lost the sea but retained the headwaters, while Sudan remained trapped between internal fragility and the struggles of political elites that exhausted many major national objectives and weakened the state’s ability to manage its strategic environment, amid the pressures of neighboring states and the complexities of the region.

As for the Horn of Africa itself, it was never truly emerging from one conflict so much as transitioning into another phase of the same cycle. The deeper causes of conflict remained buried beneath the surface, awaiting a new moment in which geography would once again impose its logic.

To be continued.