The only country that borders South Korea is North Korea. South Korea is also very close to Japan and China over the water.
Japan,North Korea and many more.
. China . Taiwan . North and South Korea . Russia Refrences: http://en.citizendium.org/wiki/Japan
Japan has no bordering countries since it is made of islands. The five closest countries to Japan are (in order) Russia, South Korea, North Korea, China, and Taiwan. North and South Korea, Russia and China.
North Korea
The four countries closest to Japan are China, Russia, North Korea, and South Korea.
North Korea invaded South Korea.
Mongolia is a landlocked country in east Asia and is bordered on the south by China and on the north by Russia. While not actually bordered by any other countries Mongolia's closest neighbor to the west is Kazakhstan and its closest neighbors to the east are North and South Korea, and Japan.
japans nearest neighbours are china, Korea and russia japans nearest neighbours are china, Korea and russia
The second country closest to Japan is South Korea, located across the Korea Strait, a 200 km wide channel. The closest country is Russia, located about 10 kilometers between Soisho-to island and Hokkaido.
The Island of Kyushu
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Japan is an archipelago consisting of four major islands on the Eastern edge of Asia. Its closest neighboring country is Russia.
The neighboring countries of North Korea are South Korea, China, Russia, Japan, and Mongolia.