Donald Trump’s push to acquire Greenland has collided with a staggering price tag and growing political resistance at home and abroad. Former U.S. officials and experts estimate buying the NATO-linked territory could cost Washington around $700 billion, more than half of the Pentagon’s annual budget, despite Denmark’s firm refusal to sell. While Trump insists Greenland is vital for U.S. national security amid rising Russian and Chinese Arctic activity, polls show most Americans oppose the plan and any military force. NATO allies remain alarmed, warning of alliance damage as European troops stage Arctic drills to assert presence.