Russian aggression is the top challenge for liberal democracies right now, military experts warned.

"You're down there and you remove things, uncover the sediments, and they slowly appear. To see this unfold before your eyes, it is quite the charge."

The scientists drew 18 ice cores of up to 2 metres long from four locations and saw visible plastic beads and filaments of various shapes and sizes.

The Northwest Passage - once a path to Asia's riches, now the focal point of a clash given new life by the Trump administration.

This week the U.S blocked the Arctic Council from issuing a unanimous declaration acknowledging climate change.

U.S. Secretary of State Mike Pompeo is calling Canada's claim over the Northwest Passage "illegitimate" in a major speech that is being criticized for being provocative and inaccurate.

A sailboat meant for the Northwest Passage has been unmoored due to extreme weather conditions.

Kingston man leaves his sailboat frozen in ice off the shores of Wolfe Island to see if it can handle a trip through the Northwest passage. Residents worry about the environmental impact if the boat sinks

"You could drive on top of it and the weight of a car won't crush the hull.”

Arctic cruise tourism has come a long way from its early days.