Answer: DIOMEDE

AnswerCrossword Clue
DIOMEDETwo Bering Strait isles separated by date line.
DIOMEDEBering Strait islands.
DIOMEDEBering Strait island group.
DIOMEDE... Island in Bering Strait.
DIOMEDE... Islands, in the Bering Strait
DIOMEDELittle ..., island in the Bering Strait