The trend toward coastal state expansion is nowhere more dramatic than in Northeast Asia. Although the coastal states in the region have claimed the 200-mile EEZs, they have difficulty delimiting their own maritime boundaries. The establishment of the EEZ, unlike the case of the Continental shelf where the issue of possession is largely hypothetical unless seabed resources are proved to exist, would inevitably raise a question of delimitation; this has made coastal states cautious about extending their zones.1