US President Donald Trump may have to spend $700 billion (over ₹63 lakh crore) to 'buy' Greenland, NBC News reported. Based on a 2025 study, Greenland's mineral resources alone are valued at $4.4 trillion. Ex-US President Harry Truman last made a formal offer for Greenland in 1946, valuing it at $100 million ($1.7 billion when adjusted for inflation) in gold.