Final answer:
The country to the east of Alaska is Russia, with the Bering Strait separating the two regions. To the direct east across the Canada-US border is the Canadian Yukon Territory, but in global terms, Russia is the nearest country across from Alaska's easternmost point.
Step-by-step explanation:
The country that lies to the east of Alaska is Russia. Specifically, eastern Siberia is adjacent to Alaska, with the Bering Strait separating the two. This narrow body of water links the Arctic Ocean with the Bering Sea and provides the boundary line between the two countries. Although not a country, directly to the east across the Canada-US border from Alaska's easternmost point is the Canadian Yukon Territory. However, when referring to the global context and the nearest country across the ocean, Russia is the correct answer. It also features the city of Vladivostok, an important port on the Pacific Rim, and is opposite Japan across the Sea of Japan.
While western-aligned countries such as those in Europe like Greece, Norway, Iceland, the United Kingdom, France, Denmark, West Germany, Italy, Turkey, Netherlands, Belgium, and Luxembourg are not near the eastern border of Alaska, it's important to note that Alaska itself was once part of Russia before being sold to the United States in 1867.