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Ethiopia first established ties with the British colonial administration in the East Africa Protectorate in 1907, when the Ethiopia-Kenya border was initially defined. The boundary was further clarified in 1947, and then formally demarcated in 1950–1955.
In 1954, Ethiopia established an Honorary Consulate General in Kenya, formally establishing ties between it and the colonial administration.
During Ethiopia's occupation by Italy, Ethiopian forces operated in British Kenyan territory, where they retrieved supplies. The Kenyan rebel group Mau Mau also operated within Ethiopian territory during the former's struggle for independence.
In 1964 the two countries signed a defence pact which has remained in force to this date. 
After Kenya's independence, a Joint Inter-Ministerial Consultative Committee reviewed the boundary between both nations. A treaty to this effect was subsequently signed in 1970.
President Kenyatta visited Addis Ababa in early 2019 with a trade delegation at the two day Kenya-Ethiopia High Level Trade and Investment Forum. The tour involved a visit to Hawassa Industrial Park.
Prime Minister Abiy visited Nairobi in May 2018 and held talks with President Kenyatta. The leaders established a Bi-National Commission, it is the highest level of structured bilateral cooperation that Kenya has with any country. Both leaders also discussed security particularly anti-terrorism and Somalia's current situation.
As part of the talks held between the leaders of Ethiopia and Kenya in 2018 key areas of cooperation were agreed upon. Those key areas were agriculture, tourism, joint military training and transport and infrastructure particularly the LAPSSET Corridor, the Ethiopia-Kenya interconnection transmission line and the Moyale Joint City and Economic Zone.
Trade and development
Ethiopia and Kenya maintain trading ties. Both countries are members of the IGAD trade bloc.
However, commerce is largely unidirectional, with Ethiopia mainly importing products from Kenya. In 2012, Ethiopia exported $4 million worth of goods to Kenya, while Kenya exported $54 million in commodities to Ethiopia.
In 2012, the countries signed a Special Status Agreement. The deal stipulates that both parties are permitted to open representative offices in each other's territory for trade facilitation, information sharing and liaison purposes. The Ethiopian Parliament later approved the treaty in April 2014.
Additionally, the Ethiopian and Kenyan governments have invested in cross-border infrastructure. The Addis Ababa-Nairobi road project was launched in 2012. It was meant to tarmac the 505 km section between Isiolo and Moyale on the frontier. The highway project is slated for completion in 2015.
In 2016, the two countries agreed to build an oil pipeline that would run from the Kenyan port of Lamu to the Ethiopian capital, Addis Ababa. This would be one of various infrastructural projects on which the two countries would work together.
- Ethiopia has an embassy in Nairobi.
- Kenya has an embassy in Addis Ababa. In addition, it maintains a permanent mission to the African Union.
-  Archived 2015-01-06 at the Wayback Machine. Ethiopia-Kenya relations. Retrieved on 12 January 2015.
- . Kenya – Ethiopia relations boosted as Abiy hosts Kenyatta. Retrieved on 15 August 2019.
- . President Kenyatta, PM Abiy Pledge New Drive To Boost Kenya, Ethiopia Ties. Retrieved on 15 August 2019.
- . Ethiopian President arrives for talks with President Kenyatta. Retrieved on 6 February 2020.
- . JOINT COMMUNIQUE DURING STATE VISIT BY ETHIOPIAN PRIME MINISTER ABIY ALI. Retrieved on 15 August 2019.
- . The Strategic Situation in Somalia and the Upcoming Withdrawal of International Forces. Retrieved on 15 August 2019.
- . Ethiopia opens doors to trade with Kenya. Retrieved on 12 January 2015.
- . Moyale Road to open up trade, says Kenya National Highways Authority. Retrieved on 12 January 2015.
- Embassy of Ethiopia in Nairobi, Kenya
- The Embassy | The Embassy of The Republic of Kenya, Addis Ababa, Ethiopia.