Buddhism is also Mahayana in origin, but is discussed below under the heading of Vajrayana (also commonly referred to as "Northern Buddhism"). There are a variety of strands in Eastern Buddhism, of which "the Pure Land school of Mahayana is the most widely practised today.". In most of this area however, they are fused into a single unified form of Buddhism. In Japan in particular, they form separate denominations with the five major ones being: Nichiren, peculiar to Japan; Pure Land; Shingon, a form of Vajrayana; Tendai, and Zen. In Korea, nearly all Buddhists belong to the Chogye school, which is
Zen at War types of social discrimination found in Sõtõ rituals and temple practices" find their origin in "the medieval institutional regulations imposed by the Tokugawa regime, not in the religious attitudes, religious practices, or religious mission of Sõtõ Zen itself". The Soto-school has installed a Human Rights Division, to terminate the regulations which contribute to discriminatory practices. "Zen at war" has contributed to discussions on the meaning of "enlightenment", and the role of Zen-teachers in the emerging western Zen-Buddhism. Bodhin Kholhede, dharma heir of Philip Kapleau, says: Stuart Lachs has written several essays on this issue, connected to teacher-scandals in western sanghas.