Do you believe "nine countries together possess around 15,000 nuclear weapons" (Iran is out of this count, because it's not yet cleared that they have active warheads.)
According to this list the world is not a safe place anymore. Because of One Nuke can change EVERYTHING in 1 second!
#10. IRAN
Number of Warheads: Unclear
#09. NORTH KOREA
Number of Warheads: 10
#08. ISRAEL
Number of Warheads: 80
#07. INDIA
Number of Warheads: 120 - 130
#06. PAKISTAN
Number of Warheads: 130 - 140
#05. UNITED KINGDOM
Number of Warheads: 215
#04. CHINA
Number of Warheads: 270
#03. FRANCE
Number of Warheads: 300
#02. UNITED STATES OF AMERICA
Number of Warheads: 6,800
#01. RUSSIA
Number of Warheads: 7,000
References:
https://goo.gl/VweGUU
https://goo.gl/tn74m2
https://goo.gl/mYSTL