According to multiple sources, there are nine countries in the world that possess nuclear weapons. These countries are:

• Russia
• United States
• China
• France
• United Kingdom
• Pakistan
• India
• Israel
• North Korea

Russia has the most confirmed nuclear weapons, with 5,997 nuclear warheads, followed by the United States with 5,428 nuclear weapons. It is important to note that some countries, such as India, Israel, and Pakistan, never signed the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) and possess nuclear arsenals.