After North Korea’s nuclear development, how many nuclear-armed countries exist including Israel?

Understanding the number of nuclear-armed countries is crucial for international relations and security studies. The term 'nuclear-armed countries' refers to states that possess nuclear weapons. Following North Korea's confirmed nuclear development, the total number of such nations, including Israel, stands at nine.

• The five permanent members of the UN Security Council are recognized nuclear powers: United States, Russia, United Kingdom, France, and China.
• Additionally, India and Pakistan developed nuclear weapons outside the Nuclear Non-Proliferation Treaty (NPT).
• North Korea conducted its first nuclear test in 2006 and has continued its development.
• Israel maintains a policy of deliberate ambiguity regarding its nuclear arsenal but is widely believed to possess nuclear weapons.

Therefore, counting these nations—US, Russia, UK, France, China, India, Pakistan, North Korea, and Israel—results in a total of 9 nuclear-armed countries.