As US military presence ramps up in the north, experts say one of Australia's closest Asian neighbours is growing wary that the US's expanded presence could bring rising tensions to the region.

“A lot of countries in our region, whether it’s the Pacific or South-East Asia, they are predominantly concerned about development, about economics, about nation-building — not necessarily about what a rising China means for their defence or military interests,”

About 100 metres from the end of a runway earmarked to take spy planes for the Australian Defence Force and its allies, hundreds of vulnerable turtles are starving and dying.

The Australian government has reneged on its 1984 commitment to the UN “that it had no intention of making the Cocos (Keeling) Islands into a strategic military base or of using the Territory for that purpose” - part of the agreement to the Act of Self Determination for Cocos to be integrated into Australia.

The Northern Territory is poised to play a key role in Australia's future missile defences, according to a Top End MP, as the region prepares for an influx of soldiers and defence force spending.

The presence of the US Marines in Australia's Top End is also poised to grow in the years ahead, with the review recommending an increase to the annual rotation.

The report called for greater "engagement with the US on deterrence, including through joint exercises and patrols; and strengthening Australia's sovereign military and industrial capabilities".

Dr Coyne said this could play out through the arrival in the north of more US ships and fighter jets annually.

"There's a strong possibility that we'll see more often, more frequent US Navy ship visits," he said.

"Certainly we're most likely to see a greater rotational force of US air force craft through northern Australia."

Federal government MP Luke Gosling said the country's north would be prepared to play its part. "There's no doubt that the Northern Territory and the Top End will be part of the [nation's] missile story," he said. "Why? Because we're defending Australia, and obviously, you can get more range into the northern approaches to Australia from the Top End."

The national significance of key Northern Territory infrastructure assets has been singled-out in a crucial new defence review released on Monday.

The Defence Strategic Review found recent severe flooding which closed the Stuart Highway and Alice Springs to Darwin railway this year had “highlighted the importance” of well-maintained resilient civil infrastructure, including ports and roads that support the network.

The future role of Robertson Barracks, home to the 1st Brigade, in our ongoing defence is unclear, but could potentially be beefed up.

The report forecasts “significant changes to army force posture and structure”, saying army combat brigades “may be re-roled and select capabilities postured in Northern Australia”.

One of six key recommendations is to improve the Australian Defence Force’s capacity to operate from Australia’s northern bases.

Secretary of Defense Lloyd Austin said Tuesday that the US will increase its military presence in Australia in a buildup aimed at China.

In a joint press conference with Australia’s defense minister and foreign minister, Austin said that the US will increase its rotational forces in Australia. “That includes rotations of bomber task forces, fighters, and future rotations of US Navy and US Army capabilities,” Austin said.

Many countries in the region are not eager to get on board with the US’s confrontational approach to China. The prime minister of Papua New Guinea said this week that his country can’t afford to get caught between the US and China and said he told the US your “enemy is not my enemy.”

Indonesia’s president expressed similar concerns during a meeting of the Association of Southeast Asian Nations (ASEAN) in November, saying the ASEAN must not let the region turn into a frontline for a new Cold War.

Details on the rotational deployments aren’t clear, but they will likely focus on the Australian city of Darwin in the Northern Territory, where US Marines have been rotating through for years.