NARVA, Estonia — Europe's big bet to break China's rare earths dominance starts on Russia's doorstep. The continent's largest rare-earth facility, situated on the very edge of NATO's eastern flank, is ramping up magnet production as part of a regional push to reduce its import reliance on Beijing. Developed by Canada's Neo Performance Materials and opened in mid-September, the magnet plant sits in the small industrial city of Narva. This little-known border city is separated from Russia by the