January 28, 2026 at 12:01 AM UTCThere are roughly 370,000 nuclear bunkers in Switzerland, a legacy of the Cold War that are now rarely used. One of them, though, is a hive of activity.Every week, more than a ton of gold is hauled in to the high-security vault, owned by crypto giant Tether Holdings SA, which is now the world’s largest known hoard of bullion outside of banks and nation states....