The backstory is about control over the island of Timor.
The Indos invaded and brought settlers into Timor and executed the Timor leadership. The Timorese fought back and won with the help of the Aussies and our Marine support.
Now the east half of the island is independent Timor Leste with a permanent Aussie base and training center for our Marines.
The issue is about land not religion even though the Timorese are not Muslim.
The Indos should be a little less sensitive about their image and more sensitive to the suffering they have caused the Timorese.
Timor Leste was a Portuguese possession until Portugal gave up her colonies after the 1974 revolution. The inhabitants are virtually all Catholic—the only majority-Christian country in East Asia apart from the Philippines.