The Southeast Asian realm borders South Asia and East Asia on land and the Pacific and Austral realms at sea(Fing 10-2) Note that one political entity that forms part of it Indonesai extends bevond the realms borders the easternmost province of indonesai the western of the pacific island of New Guinea where indigenous cultures are Papuan Today Indonesian rules what is in effect a Pacific island colony celled papua We discuss this territor as part of our assessment of Indonesia but we will alos consider all of New Guinea as a component of the Pacific Realm chapter 12