Archive · 1 Oct 2026
Trump’s nuclear diplomacy highlights the North Korea-Iran contradiction
The United States says Iran must not build a nuclear weapon.
North Korea already has nuclear weapons.
President Donald Trump called North Korean leader Kim Jong Un a friend and said their relationship can help reduce danger.
This is different from the much tougher pressure placed on Iran.
North Korea left an international nuclear treaty in 2003 and tested nuclear weapons afterward.
The exact size of its arsenal is disputed, with estimates ranging from 57 to 120 warheads.
Trump previously threatened North Korea but later met Kim three times.
Critics worry that countries may think building nuclear weapons is safer than refusing to build them.
Donald Trump said North Korean leader Kim Jong Un is a friend while acknowledging North Korea’s nuclear capability.
Trump maintains that Iran must not acquire nuclear weapons, although Tehran denies seeking them.
North Korea withdrew from the Nuclear Non-Proliferation Treaty in 2003 and later conducted nuclear tests.
Estimates of North Korea’s arsenal range from 57 to between 80 and 120 warheads.
Trump’s approach has renewed debate over whether nuclear policy rewards states that already possess nuclear weapons.
- Who
- Donald Trump, Kim Jong Un, North Korea, Iran, and the United States.
- What
- Trump’s comments have highlighted the contrasting American approaches toward North Korea’s existing nuclear arsenal and Iran’s nuclear activities.
- When
- In recent remarks discussed in the article.
- Why
- The comments renewed questions about whether international pressure and diplomacy discourage nuclear proliferation or ultimately accommodate countries that acquire nuclear weapons.
Non-proliferation and prevention
Deterrence and diplomatic reality
How to treat Iran and North Korea
Non-proliferation and prevention
The United States should prevent Iran from acquiring nuclear weapons and maintain pressure because prevention is easier than disarmament.
Deterrence and diplomatic reality
Once a country has a credible nuclear arsenal, forcing it to surrender those weapons is far more costly, making diplomatic management more practical.
Role of personal diplomacy
Non-proliferation and prevention
Emphasizing Trump’s friendship with Kim may weaken treaty-based and principle-based explanations for American nuclear policy.
Deterrence and diplomatic reality
Trump argues that his personal relationship with Kim is an asset that can reduce the danger posed by North Korea’s nuclear capability.
Message to other countries
Non-proliferation and prevention
A strong non-proliferation policy should convince countries that not building nuclear weapons makes them safer.
Deterrence and diplomatic reality
The differing treatment of North Korea and Iran may suggest that countries possessing nuclear weapons eventually receive greater strategic caution from Washington.
- North Korean arsenal estimates
- South Korean Defence Minister Ahn Gyu-back estimated 80 to 120 warheads; Trump previously cited 57.
- North Korea’s treaty status
- North Korea withdrew from the Nuclear Non-Proliferation Treaty in 2003.
- Trump-Kim meetings
- They met in Singapore in 2018, Hanoi in 2019, and at the Korean Demilitarised Zone later in 2019.
- Trump’s position on Iran
- Trump has maintained that Iran must not acquire a nuclear weapon.
- Iran’s position
- Iran has consistently denied that it seeks a nuclear weapon.
- North Korea negotiations
- Trump’s meetings with Kim did not produce an agreement eliminating North Korea’s nuclear arsenal.