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#FactFriday ➡️ The 9 nuclear-armed states—🇺🇸🇷🇺🇬🇧🇫🇷🇨🇳🇮🇳🇵🇰🇰🇵🇮🇱—continued programmes to modernize and enhance their nuclear arsenals in 2025, and most deployed new nuclear-armed or nuclear-capable weapon systems during the year.