The Mongol invasions of Vietnam occurred in the late 13th century, primarily during the reign of Kublai Khan, the Mongol emperor. The Mongols aimed to expand their empire and launched three major military campaigns against the Trần dynasty in Vietnam between 1258 and 1288. Despite their formidable military strength, the Mongols faced fierce resistance from the Vietnamese. The Vietnamese forces, led by generals like Trần Hưng Đạo, utilized guerrilla tactics and knowledge of the local terrain to counter the Mongol advances. Ultimately, the Mongols were repelled, marking a significant moment in Vietnamese history and demonstrating the resilience of the Vietnamese people against foreign invasions.