The Embassy of Eritrea in the United States posted a statement on 28 January 2021 titled "Former US Ambassadors to Ethiopia: Fanning the Flames of Conflict."
Four former US ambassadors to Ethiopia sent an open letter dated 21 January to Ethiopian Prime Minister Abiy Ahmed containing the following sentence: "We are also worried about the reported presence of Eritrean troops in Tigray, which could jeopardize Ethiopia's territorial integrity."
The Embassy of Eritrea responded that "the Ambassadors insinuate a non-existent threat from Eritrea to the 'territorial integrity of Ethiopia'." The Embassy statement concludes: "the allusion by these Ambassadors to potential territorial war between Eritrea and Ethiopia can only be disingenuous in content and vicious in intent."
I refer the good Embassy to Shakespeare's Hamlet: "The lady doth protest too much, methinks."