For some sixty years, commencing in 1260, the Mamluk state in Egypt and Syria was at war with the Ilkhanid Mongols based in Persia. This is the first comprehensive study of the political and military aspects of the early years of the war, the twenty-one-year period commencing with the battle of Ayn Jalut in Palestine in 1260 and ending in 1281 at the battle of Homs in northern Syria. Between these major confrontations, which resulted from Mongol invasions into Syria, the Mamluk-Ilkhanid struggle was continued in the manner of a 'cold war' with both sides involved in border skirmishes, diplomatic maneuvers, psychological warfare, ideological posturing, espionage and other forms of subterfuge. Here, as in the decisive battles, the Mamluks usually maintained the upper hand, establishing themselves as the major Muslim power at the time. Using primarily contemporary Arabic and Persian sources, Reuven Amitai-Preiss sheds new light on the confrontation, examining the war within the context of Ilkhanid/Mamluk relations with the Byzantine Empire, the Latin West and the crusading states, as well as with other Mongol states.