It goes vvithout saying that, ali through known history,peoples and nations cooperated in the face of common dangers.İt is stili common knovvledge that a great proportion of cooperation in this regard had ceased to function once the imminentdanger is över. Who, but a few historians, can remember thequiet disappearence of a multitude of alliances of the 19th andearly 20th centuries into complete obüvion, follovving sometimessubtle but more often drastic changes in the international system.Who could foresee back in nineteenfifties that the Balkan Alliance among Yugoslavia, Greece and Turkey, would turn intoa "dead" document a few days after its formation, due to thediffering perceptions of the signatories of the Soviet challengeand to the discord betvveen Turkey and Greece on a completelynevv ground. But once common dangers become common problems, then cooperation among partners prove to be more lasting and common efforts tovvard their solution foster an ever-insreasing understanding.