Ethiopian Prime Minister Abiy Ahmed was awarded the 2019 Nobel Peace Prize on Friday for his peacemaking efforts with Eritrea.

Ethiopia and Eritrea, longtime foes who fought a border war from 1998 to 2000, restored relations in July 2018 after years of hostility.

“Ethiopian Prime Minister Abiy Ahmed Ali has been awarded this year’s Nobel Peace Prize for his efforts to achieve peace and international cooperation, and in particular for his decisive initiative to resolve the border conflict with neighbouring Eritrea,” the Norwegian Nobel Committee said in its citation.

While the other prizes are announced in Stockholm, the peace prize is awarded in the Norwegian capital, Oslo.

Two literature prizes were awarded Thursday: the 2018 prize went to Polish novelist Olga Tokarczuk and the 2019 award was given to Austrian author Peter Handke.

The chemistry prize went to three scientists for their work leading to the development of lithium-ion batteries; the physics award was given to a Canadian-American and two Swiss for exploring the evolution of the universe and discovering a new kind of planet; and the physiology or medicine award went to two Americans and one British scientist for discovering details of how the body’s cells sense and react to low oxygen levels.

In his will, Alfred Nobel, the Swedish industrialist and inventor of dynamite, decided the peace prize should be awarded in Oslo. His exact reasons for having an institution in Norway handing out that prize is unclear, but during his lifetime Sweden and Norway were joined in a union, which was dissolved in 1905.

The economics prize wasn’t created by Nobel, but by Sweden’s central bank in 1968. It is awarded Monday.

With the prize comes a $918,000 US cash award, a gold medal and a diploma. The laureates receive them at elegant ceremonies on Dec. 10 — the anniversary of Nobel’s death in 1896 — in Stockholm and Oslo.