From the earliest times the great peninsula which lies between India and China .... has been peculiarly subject to foreign intrusion. Successive waves of Mongolian humanity have broken over it from the north, Dravidians from India have colonised it, Buddhist missions from Ceylon have penetrated it, and buccaneers from the islands in the south have invaded it. Race has fought against race, tribe against tribe, and clan against clan. Predominant powers have arisen and declined. Civilisations have grown up, flourished and faded. And thus out of many and diverse elements a group of nations have been evolved, the individuals of which, Môn, Kambodian, Annamese, Burmese, Shan, Lao, Siamese and Malay, fundamentally much alike, but differing in many externals, have striven during centuries for mastery over each other, and incidentally over the countless minor tribes and clans maintaining a precarious existence in their midst. Into this mêlée of warring factions a new element intruded in the sixteenth century A. D. in the shape of European enterprise. Portuguese, Dutch, French and English all came and took part in the struggle, pushing and jostling with the best, until the two last, having come face to face, agreed to a cessation of strife and to a division of the disputed interests amongst the survivors. Of these there were but three, the French, the English, and the Siamese, and therefore Further India now finds herself divided, as was once all Gaul, into three parts. To the east lies the territory of French Indo-China, embracing the Annamese and Kambodian nations and a large section of the Lao; in the west the British Empire has absorbed the Môn, the Burmese and the Shans; while, wedged between and occupying the lower middle part of the subcontinent, with the isolated region of British Malaya on its extreme south border, lies the kingdom of Siam, situated between 4° 20' and 20° 15' N. latitude, and between 96° 30' and 106° E. longitude.[1] So wrote Graham at a period when the Siamese held sway over a territory of more than 200,000 square miles or an area equivalent to the combined areas of the States of Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Delaware, Maryland, Pennsylvania, and almost half of Ohio. It must not be supposed, however, that the Thai[2] had permanently resigned themselves to a continuation of this political division of the peninsula. Rich provinces to which they had more or less cogent claims, based on facts of history or ethnography, lay under foreign rule and, with the rise of world-wide nationalism in the 1920's and 1930's a lively irredentism came into flower. This irredentism and its accompanying nationalistic fervor have colored the policies of the Thai Government during the decade just passed and serve to explain many political actions which are otherwise puzzling to the western world. [1] Graham, W. A., Siam, vol. 1, pp. 1-2, London, 1924.