"border" . . "Border with Sudan" . "1,600-kilometer border" . . . . "northwest" . "Ethiopian border" . "Ethio-Sudanese borderland" . "Sudan's eastern border with Ethiopia" . "Ethiopia\u2013Sudan border" . "Ethiopian Christians" . . "country's western border with Sudan" . "Ethiopian\u2013Sudanese border" . . . . "border with Sudan" . . "border with Ethiopia" . "border between Sudan and Ethiopia" . "Ethiopia\u2013Sudan border" . "western Ethiopian border" . "Sudanese border" . "Sudan-Ethiopia borderland" .