Answer: Bering Strait
Notes: Bering Strait separates the United States and Russia. It's a narrow channel of water that connects the Bering Sea (Pacific Ocean) and the Chukchi Sea (Arctic Ocean). The Bering Strait is 82 km wide and has a depth of 98 to 164 feet. The Diomede Islands are located in the middle of the strait. The closest geographic point between the borders of the USA and Russia lies in the Bering Strait. The Bering Strait was discovered in 1728 by Dutch explorer Vitus Jonassen Bering. The strait is named after him.
