China put the Pacific Islands on the geopolitical map. What comes next?

Ten days, seven Pacific island nations and the first visit to the region by a senior Chinese official in more than two years.

Chinese Foreign Minister Wang Yi's trip to what has been seen as a diplomatic backwater put the resources-rich and strategically significant Pacific Islands squarely on the geopolitical map.

The centrepiece of the trip was the discussion of a proposed security deal between Wang and the foreign ministers of 10 Pacific island nations.

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China failed to secure endorsement for the pact from the ministers but the renewed Chinese interest in the region has drawn attention from traditional Pacific players such as the United States, Australia and New Zealand.

So far, the Pacific Islands have refused to be drawn into a geopolitical game but might seek to reduce ties with former colonial powers by engaging with more countries, including China, regional observers say.

Wang's trip took him to Solomon Islands, Kiribati, Samoa, Fiji, Tonga, Vanuatu and Papua New Guinea, and included virtual talks with his counterparts from the Cook Islands and Micronesia.

In the midst of that activity, Australian Foreign Minister Penny Wong landed in Samoa for her second trip to the region in just 10 days after taking office, offering a new coastguard patrol boat next year to replace one that ran aground.

The region was also the focus of the discussion between US President Joe Biden and New Zealand's Prime Minister Jacinda Ardern, with Biden saying the two sides "have more work to do in those Pacific islands".

"More diplomatic waves" could follow, according to Henry Ivarature, a Pacific Fellow at the Crawford School of Public Policy at the Australian National University, who has worked extensively in the islands.

"The Pacific, in my experience of working in the region, has never witnessed the scale [of what] China's foreign minister has done. Neither have the Pacific traditional partners ever undertaken such an extensive tour of the Pacific," Ivarature said.

"China's failure to secure a regional agreement, I think, only strengthens its resolve to present a more 'palatable' proposal.

"China has done what Australia and New Zealand have never done. The Pacific can expect more diplomatic waves from China, Australia, New Zealand and even the USA."