Aside from Canada or Mexico, which country is closest to the U.S.?

Here is the question :

ASIDE FROM CANADA OR MEXICO, WHICH COUNTRY IS CLOSEST TO THE U.S.?

Here is the option for the question :

• Cuba
• Russia
• Bermuda
• Greenland

The Answer:

And, the answer for the the question is :

Explanation:

[STC003911] It may not be close enough for Alaskans to see it from their window, but Russia is pretty near to the United States. In fact, Russia is closer to the United States than any other country, with the exception of Canada and Mexico, with which the United States shares borders. Those living in the lower 48 tend to think of Russia, the largest country in the world, as being quite far away, but Big Diomede Island (which belongs to Russia) is only about 2.5 miles away from Little Diomede Island (which is part of Alaska). Because of the location of the International Date Line between them, the time on Big Diomede is also 20 hours later than it is on Little Diomede; this is how the two islands got their respective nicknames of Tomorrow Island and Yesterday Island.