A new defense agreement between the United States, Denmark and Greenland is reshaping the Arctic security landscape, raising questions about whether an expanding military presence will bring greater stability or fuel new tensions in the region.

Under the agreement, Washington is set to gain access to two additional military areas in Greenland, strengthening its strategic position in the Arctic.

Greenland's government has welcomed the deal, but repairing relations with Washington remains a challenge following President Donald Trump's repeated threats to take control of the island.

Years-long US threat

Aja Chemnitz, a former member of Greenland's parliament, described the relationship as deeply strained.

"We've been under the threat of the US for the last almost seven years. So it's been like a dysfunctional relationship," she said, adding that rebuilding trust would take time.

Greenland has become increasingly important to US defense planning because of its geographical position between North America and Europe, while NATO has pointed to Russian military activity as justification for strengthening its Arctic capabilities.

However, experts warn that increased military deployments could carry unintended consequences.

David Balton, a senior fellow at Harvard Kennedy School, believes the Arctic remains relatively peaceful despite rising geopolitical tensions.

"I still think the Arctic remains a relatively low-threat region for armed conflict," he said. "But tensions have increased, and the possibility of miscalculation and unintended consequences of actions has gone up."

The debate, however, extends beyond Greenland.

At the Arctic Circle Assembly in Reykjavik, security and cooperation emerged as central themes, with Denmark calling for NATO's Arctic Sentry mission to become a permanent feature of regional defense.

Iceland, strategically positioned along the Greenland-Iceland-United Kingdom gap, plays an important role in monitoring the North Atlantic.

Regional stability

European countries without Arctic territory are also closely following developments.

Agostino Pinna, Italy's Special Envoy for the Arctic, stressed the importance of preserving regional stability.

"We are very much interested in keeping the Arctic as an area of low tension," he said, warning against allowing wider geopolitical confrontations to undermine cooperation.

Across the Bering Strait, Alaska's governor offered another perspective, arguing that military modernization does not automatically signal preparations for conflict.

"When you have the assets there, there's actually more cooperation and less conflict," he said.

As military activity expands across the High North, the northernmost region of the world, governments face a delicate balancing act.

For Greenland, the priority is sovereignty. For Washington, it is national security. For NATO, it is deterrence.

But the wider question remains whether stronger defenses can protect the Arctic's traditionally cooperative environment — or risk turning one of the world's least militarized regions into another arena of geopolitical rivalry.