The Aegean Sea, with its thousands of islands and unique location, has a huge geo-strategic importance for Greece. Especially, in recent years it has gained more importance and constitutes an issue for serious study for two reasons: First, the illogical claims for Turkish domination over the Aegean Sea and second the importance of its role to the National Defense of Greece. The relations between coterminous countries, especially those that have a sea in between, are defined by the norm of the International Law. These norms spring mainly from International treaties for both Sea Law and Maritime Customs. According to Law of the Sea Convention (LOSC), Montego Bay 1982, the off-shores countries have the right of extension of their territorial waters up to 12 nautical miles. The Greece desires to apply this norm, but the Turkey considers that as casus belli (cause of war) threatening her.