Explanation:

Australia is not involved in South China Sea dispute.
The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Karimata and Malacca Straits to the Strait of Taiwan of around 3,500,000 square kilometres. The sea carries tremendous strategic importance; fully one-third of the world's shipping passes through it, it contains lucrative fisheries that are crucial for the food security of millions in Southeast Asia, and huge oil and gas reserves are believed to lie beneath its seabed.