US President Donald Trump has said that American control over Greenland is "vital" for the Golden Dome missile defense system and US national security. Trump, who has expressed his desire to acquire Greenland from Denmark, wrote on social media, "The United States needs Greenland for the purpose of National Security. It is vital for the Golden Dome that we are building." He added, "NATO becomes far more formidable and effective with Greenland in the hands of the UNITED STATES. Anything less than that is unacceptable." Greenland's strategic importance lies in its location between the US and Russia. Russian ballistic missiles aimed at America would likely fly across the Arctic, making Greenland ideal for early missile detection and interception. The Golden Dome defense system benefits from positioning sensors close to these missile paths. Greenland hosts the Pituffik Space Base, part of the US Space Force. The base supports missile-warning radars, satellite tracking, and space surveillance essential for the Golden Dome's operations. Experts note that Greenland's Arctic location is one of the best on Earth to manage satellites in polar orbit, relay data, and coordinate space-based defense. It ranks just behind Norway’s Svalbard but is closer to the US and easier to protect. The urgency for this defense plan comes as Russia militarizes the Arctic and China expands its presence there. Both countries develop anti-satellite weapons and long-range missiles. Trump’s Golden Dome system aims to counter these northern and space threats effectively.