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flag Greenland’s radar systems can’t detect hypersonic missiles, and the U.S. lacks a coordinated Arctic defense, experts warn.

flag Greenland’s early warning radar systems at Pituffik Space Base, critical since the Cold War for detecting intercontinental ballistic missiles, cannot detect hypersonic threats traveling over Mach 5, defense experts say. flag The U.S. lacks an integrated air and missile defense system in Greenland, leaving the base vulnerable. flag Critics urge a layered defense using Patriot, NASAMS, SHORAD, and advanced sensors like over-the-horizon radars and airborne platforms, adapted for Arctic conditions. flag In June 2025, U.S. Northern Command assumed responsibility for Greenland, reflecting its growing role in homeland defense, but coordination with Denmark and multiple U.S. commands remains a challenge.

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