as teachers and professors become soldiers in an intellectual war over events more than a half-century old or even two millennia older. Efforts to reach compromise agreements have failed. Meanwhile, a much less controversial, less politicized and more study-oriented historiography has flourished in Western nations. In 2013, polls reported that 94% of Koreans believe Japan "Feels no regret for its past wrongdoings," while 63% of Japanese state that Korean demands for Japanese apologies are "Incomprehensible". Ancient Era Relations between Korea and Japan go back at least two millennia. After the 3rd century BC, people from the Three Kingdoms (Goguryeo, Baekje and Silla) and Gaya in the Korean Peninsula, started to move southwards into the Kyushu region of Japan. Knowledge of mainland Asia was transmitted via Korea to Japan. According to the description of the Book of Wei, Yamatai-Koku kingdom in Japan and Four Commanderies of Han had diplomatic exchanges around the 3rd century. There are indications of cross-border political influence, but with varying accounts as to in which direction the political influence flowed. Buddhism was introduced to Japan from this Korean monarchy. By the time of the Three Kingdoms period of Korea, Baekje and Silla sent their princes to the Yamato court in exchange for military support to continue their already-begun military campaigns around 400. Historians believe that by the 4th and 5th centuries AD, Baekje and Gaya would regularly send economical, cultural, and technological aid to Japan in exchange for military and political aid, as the Yamato court desired technological progress and cultural advancement while Baekje and the Gaya states desired Japan's military aid in their wars against Silla and Goguryeo. Records of Baekje missions to Japan and Japanese missions to Baekje help reinforce this position, as many of Baekje's missions to Japan involved sending specialists (such as Monks and Scholars), Buddhist goods, various books and medicines while Japan regularly sent thousands of soldiers, hundreds of horses and scores of ships. Later on, Baekje began to lose its status as the most favored partner of Japan, in part due to its relative decline compared to Goguryeo and Silla as well as the subsequent unification of China by the Sui Dynasty. Uija, the last king of Baekje (reigned 641–660), formed an alliance with Japan and made Prince Buyeo Pung and King Zenko stay there as their guests. In 660, Baekje fell when it was attacked by Silla, who was in