China warns Papua New Guinea over Australian defence deal

China cautioned Papua New Guinea against "undermining" its interests and sovereignty in signing a mutual defence pact with Australia widely seen as a counter to Beijing's growing influence in the Pacific.

Australia and Papua New Guinea this week agreed on the text of a deal which will see the countries commit to defending each other from armed attacks.

Asked about the deal, a spokesperson for Beijing's embassy in Port Moresby said China respected Papua New Guinea's right to strike deals with other countries. 

But such a deal should not be "exclusive", nor restrict Papua New Guinea from cooperating with other countries, the spokesperson said late Thursday. 

"It should also refrain from targeting any third party or undermining its legitimate rights and interests," they warned. 

China urged the country to maintain "mutually beneficial cooperation" with Beijing and "uphold independence and self-reliance".

Beijing has committed billions of dollars to Pacific nations over the past decade, funding hospitals, sports stadiums, roads and other public works in an attempt to win their favour.

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Canberra has stepped up its engagement with the region in a bid to counter China's influence.

Australia and Papua New Guinea say the treaty will be signed after cabinet processes in both countries, following a delay this week.

The text of their deal says "any activities, agreements or arrangements with third parties would not compromise the ability of either of the Parties to implement the Treaty" -- a clear nod to China.

Prime Minister James Marape said this week he would send his defence minister, Billy Joseph, to China to discuss the agreement.

To the north of former colonial power Australia, Papua New Guinea is the largest and most populous state in Melanesia.

Beijing's economic support in the Pacific appears to be paying dividends, with Solomon Islands, Kiribati and Nauru all severing diplomatic ties with Taiwan in favour of China in recent years.

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