Tibetan Buddhism is a religion in exile, forced from its homeland when Tibet was conquered by the Chinese. At one time it was thought that 1 in 6 Tibetan men were Buddhist monks.

The best known face of Tibetan Buddhism is the Dalai Lama, who has lived in exile in India since he fled the Chinese occupation of his country in 1959.

Tibetan Buddhism combines the essential teachings of Mahayana Buddhism with Tantric and Shamanic, and material from an ancient Tibetan religion called Bon.

Although Tibetan Buddhism is often thought to be identical with Vajrayana Buddhism, they are not identical – Vajrayana is taught in Tibetan Buddhism together with the other vehicles.

Source

link: https://www.bbc.co.uk/religion/religions/buddhism/subdivisions/tibetan_1.shtml