Opinion: A key U.S. ally in Africa is massacring civilians. Can Biden stop it?

ETHIOPIA IS emerging as a major test of the Biden administration’s commitment to a foreign policy grounded in human rights. Since the federal government dispatched troops to the rebellious region of Tigray in November, there have been scattered reports of atrocities as well as warnings by aid groups of a humanitarian crisis due to the interruption of food deliveries. Then last week came disturbing new reports of massacres by troops from neighboring Eritrea of hundreds of civilians and of ethnic cleansing by militias.