The French president is pressing his country’s interests in the South Pacific this week and trying to make France’s voice heard in a region shaping up as a prime geopolitical battleground for China and the U.S.

President Emmanuel Macron’s trip to Papua New Guinea, Vanuatu and New Caledonia starting Monday comes as French forces take part in massive U.S Australian-led military exercises in the region. With troops, citizens and resources spread across its Pacific territories, France wants to protect its interests and project its power alongside like-minded democracies worried about China’s growing assertiveness.

The most strategically important stop is Thursday in Papua New Guinea, which has seen growing Chinese influence and signed a new security cooperation pact with the U.S. in May. The most populous Pacific Island nation is also negotiating a security treaty with Australia.

Macron’s office insists the trip is not aimed at pressing an “anti-China policy,” but at encouraging regional powers to diversify their partnerships beyond Beijing and Washington. He felt the trip was needed because of “new, more intense threats’’ to security, institutions and the environment in the region, according to an official in Macron’s office who spoke on condition of anonymity because they weren’t authorized to speak publicly on the matter.

His chief diplomatic adviser, Emmanuel Bonne, speaking at the Aspen Security Forum last week, said “China is a global challenge. It is a challenge for the U.S. as well as for the EU,” adding that “there is kind of a strategic awakening in Europe today” of the need for tougher policy toward China.

But he insisted that Europe shouldn’t “delegate” its global security needs to the U.S and should craft its own strategic policies. “If we want to remain relevant in today’s world and to tomorrow’s world as France, as Europeans, we need to be much more robust,” he said.

Macron’s office says he plans to visit a French patrol ship in the area, and offer infrastructure projects and a partnership to save forests and mangroves while ensuring jobs in Papua New Guinea, where France’s TotalEnergies is leading a liquefied natural gas project.

The French tour is coinciding with trips by some top U.S officials to the region, including Secretary of State Antony Blinken’s visit to Tonga, New Zealand and Australia this week after a visit to Papua New Guinea in May.

Macron began Monday in the French archipelago of New Caledonia, trying to rebuild trust after voters rejected a string of independence referendums that exposed entrenched frustrations of native Kanaks and inequalities with the mainland, and divisions over management of the region’s rich nickel reserves. Negotiations are underway for a new status for the territory and its institutions.

“I am at our compatriots’ side to define the basis of this new path,” Macron said in a televised interview after arriving.

Coastal erosion and other impacts of climate change top the agenda at each stop on Macron’s trip, in a region replete with islands that see periodic tsunamis and risk disappearing to rising seas, according to his advisers.

France has been an uninterrupted presence in the region since the 19th century, thanks to its colonial history and continued control over territories that are home to 1.5 million citizens and some 7,000 troops across the Indo-Pacific.