The U.S. envoy to the Horn of Africa, who has been pressing the Ethiopian and Tigray sides to stop fighting and hold peace talks, told reporters last week that Washington has been tracking Eritrean troop movements across the border.
"They are extremely concerning, and we condemn it," Mike Hammer said. "All external foreign actors should respect Ethiopia's territorial integrity and avoid fueling the conflict."
Eritrean President Isaias Afwerki, the only leader the country has had since independence three decades ago, remains a foe of the Tigray authorities despite Ethiopia and Eritrea restoring ties in 2018 following a bloody border war. Tigray authorities have bristled at the suggestion made by an African Union special envoy that Eritrea be part of talks to end the current conflict.