A US publication has raised doubts the Territory will ever see the 2500 Marines President Barack Obama pledged to send to Darwin in 2013.

Marine Corps Times reported Tuesday that “it is not clear whether that goal will be met” and suggested the NT Government’s decision to lease the Darwin Port to Chinese-owned Landbridge Group has caused friction between the two nations.

“Darwin deployments have proven invaluable as the Pentagon looks to beef up regional security and response with an eye toward an expanding Chinese military,” it reported.

“However, the late 2015 lease of Darwin Port to Chinese-owned company Landbridge Group has caused a stir in the Pentagon, according to Australian media reports.”

Mr Obama last month reportedly told Prime Minister Malcolm Turnbull the US would have liked a “heads up” before the deal was signed.

“US and Australian defence leaders are looking to rotate a three-ship amphibious readiness group through the region, and perhaps a carrier strike group,” the report stated. “Darwin’s port would need to be expanded to host an amphibious assault ship and two dock landing ships.”

Pentagon officials have flown to Australia to for "emergency talks"
to express their frustration over the Port of Darwin sale
and Canberra's reluctance to stand up to Beijing.

Last year, the port hosted 102 naval vessels, according to its annual report, and was the point of arrival for US Marines on rotation through Darwin. Pentagon officials now want assurances from Australia on security arrangements at the port and better systems to ensure the breakdown in communication doesn't happen again.

The US officials also expressed concerns over Australia's lack of interest in sending naval ships to join Washington's so-called "freedom of navigation" operations in the South China Sea.

The United States and Japan said Thursday Tokyo would pay a third of the cost of Washington pulling thousands of Marines out of Japan as it reduces its heavy military presence on Okinawa.

US Secretary of State John Kerry, Secretary of Defense Chuck Hagel, Japan’s Foreign Minister Fumio Kishida and Defense Minister Itsunori Onodera signed the protocol amending the 2009 Guam International Agreement, as part of a meeting on the two countries’ alliance.

Changes include “clarifying that Japan will contribute up to $3.1 billion in Fiscal Year 2012 US dollars in direct cash contributions to develop facilities and infrastructure in Guam and the Commonwealth of the Northern Mariana Islands”, the state department said.

It accounts for 36 percent of the projected $8.6 billion cost of the relocation.

In a 2012 agreement, the United States said it would pull 9,000 Marines out of Okinawa — 4,000 of whom would go to Guam and 5,000 to Hawaii and on rotations to Australia — as it seeks to ease a long-running standoff over the future of its huge military presence in one of its top Asian allies.

Defence was asked about any sensitivities over Darwin's China port deal, the NT Government says.

Defence was consulted prior to the deal being sealed, after a NT parliamentary committee noted the strategic position of the port and warned no foreign investment should occur that threatened the country's security interests.

While a Federal Government spokesperson said Defence secured a 15-year access agreement to the port in anticipation of the lease occurring - they also said it was spending millions of dollars on an alternative barge facility in Darwin.

The Maritime Union of Australia (MUA), which is against the deal, has labelled the lease a strategic worry for the Top End, which plays host to a large Australian Defence presence and yearly rotations of USA Marines.

The USA Chief of naval operations, Admiral Greenert, when he was in Australia last year clearly identified port infrastructure needs in Darwin as a critical element to the growth of 'cooperation' in Darwin.

Parliament has approved an $18 million project to build a barge facility at a site adjacent to the Darwin port that will be capable of loading and unloading giant amphibious naval ships at short notice.

As a parade of senior Australian and United States commanders and their public affairs teams attempted to stay on message about the “humanitarian” aspects of the biggest military exercise ever in Australia — the shadow of China was cast over every facet of the intensive war gaming.

During a lightning visit to the exercise area on Sunday, Prime Minister Tony Abbott insisted that China appreciated that Australia was an ally of the United States.

Mr Abbott further confused things when he declined to rule out the possible future permanent basing of USA forces in Northern Australia.

The Marine Corps training rotation is scheduled to grow from 1100 now to 2200 in the next few years, but Mr Abbott left the door open for even greater access for USA forces to the deserted and wide-open training ranges of Northern Australia.

When asked specifically if there would be USA forces based in the north the prime minister was noncommittal.

“Let’s see what the future holds. I am not saying there will be more … but they shouldn’t shock or surprise anyone.”

Ask any of the thousands of USA Marines participating in Talisman Sabre — particularly those based on the tiny island of Okinawa in Japan — and they will tell you that the NT and Rockhampton are war games nirvana.