Japan to skip naval event after South Korea protests over ‘Rising Sun’ flag | Reuters

“The “Rising Sun” ensign, used by the Japanese Imperial Navy in campaigns around Asia and the Pacific before and during World War Two, was adopted by the Maritime Self-Defence Force in 1954.

Variations of the flag are used by the Ground Self-Defence Force and on the fatigues of some Japanese sailors, but some South Koreans liken it to Nazi symbols such as the swastika.”