Trump's Greenland obsession exposes dangerous imperial ambitions that threaten the entire transatlantic alliance. Macron correctly warned against this new colonialism, while Canada's Carney laid out how middle powers must unite against American bullying and coercion. The rules-based order that prevented great power conflicts for decades is being shredded by threats against NATO allies. Sovereignty and territorial integrity matter — 57,000 Greenlanders deserve self-determination, not annexation by force disguised as real estate deals.