Suckling called the region, which marks the confluence of Indian Ocean and the Pacific Ocean, a strategic domain of "maximum priority" for Australia where he said a lot of "realist" foreign policy was at play.
The outgoing High Commissioner said that it was imperative that Australia works with India to develop multilateral institutional "architecture" along the lines of the European Union in the region.
When asked about Australia's ties with India and China, he said, "It's a complicated dance. But for us, it should not be seen as a binary choice. We should be able to manage both relationships. We should be able to work with those complex elements."
He was addressing students at an event, organised by the Australia India Institute, at Lady Shri Ram College for Women here. The college has a student exchange programme with Melbourne-based La Trobe University.
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Suckling, who took charge as High Commissioner to India in 2013, said that the ties between the two countries that suffered from a "stop-start" syndrome in the past, "has never been better".
Suckling said that Prime Minister Narendra Modi has invited Australian mining companies to invest in India in order to modernise India's mining sector and also in the areas of skills and education.
"We have significantly improved intelligence relationship and military cooperation also. All sorts of dialogues have proliferated. People to people contact is also building a very strong fabric. People are driving the relationship forward," he said.