Putin recently tested a nuclear-powered missile known by NATO as Skyfall. It reportedly flew 14,000 km (8,700 miles) over 15 hours, and Russian officials claim this is “not the limit”

Putin recently tested a nuclear-powered missile known by NATO as Skyfall. It reportedly flew 14,000 km (8,700 miles) over 15 hours, and Russian officials claim this is “not the limit.”