Pencak Silat Indonesian island, and displays the greatest diversity of techniques. Many Javanese schools such as Perisai Diri and Inti Ombak have been established internationally in Asia, Europe and America. Merpati Putih or "white dove" style was developed in the keraton (royal courts) of 17th century Mataram and was not taught publicly until 1963. Today it is the standard unarmed martial art of the Indonesian National Armed Forces. It includes weapons but focuses more on empty-handed self-defense and the development of internal strength developed through breathing techniques. Pencak silat in Java draws from traditional kejawen and Hindu-Buddhist Javanese beliefs but after Indonesia's
Pencak Silat in the highly-aggressive nature of their pencak silat. Acehnese pencak silat borrows its foundation from silat Melayu and silek Minangkabau, particularly the arm-seizing techniques of the former and the ground-sitting postures of the latter. Bladed weaponry is favoured, specifically knives and swords. The primary weapon is the rencong, an L-shaped dagger used mainly for thrusting but also for slashing. The kris is used as well but the native rencong takes precedence. Batak land is situated between the Minangkabau to the south and Aceh to the north, and the culture shows both Indian and Chinese influence. The word Batak refers to