two islands in the Bering Strait, between Siberia & Alaska; , Russia (Russ. name Ratmanov) & , U.S.: U.S.-Russia boundary passes between them
See Diomede Islands in American Heritage Dictionary 4
(dīˈə-mēdˌ)
Two rocky islands in the Bering Strait between Alaska and Siberia. Little Diomede belongs to the United States; Big Diomede, to Russia. The islands were discovered and named by Vitus Bering in 1728.