The korea strait and the sea of japan

The Korea Strait and the Sea of Japan separate Japan from the mainland.

To add, the Korea Strait is a sea passage between Japan and South Korea, connecting the East China Sea and the East Sea in the northwest Pacific Ocean. The strait is split by the Tsushima Island into the western channel and the Tsushima Strait.

an era of negotiation.

is that an answer to your question?

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