Russia

New Russian submarine test-fires ballistic missile for first time

Borei-class vessel's test comes amid arms control tensions between Moscow and West following demise of key nuclear pact.

New Russian submarine test-fires ballistic missile for first time

Iran

'Dangerous game': US, Europe and the 'betrayal' of Iran

US hardens stance on a defiant Iran, raising risk of war and leaving Europe scrambling to protect 2015 nuclear deal.

'Dangerous game': US, Europe and the 'betrayal' of Iran

Kim Jong Un

North Korea's Kim rides white horse in show of sanctions defiance

Mt Paektu and the white horse are central to the Kim family's mythology and visits often herald major policy moves.

North Korea's Kim rides white horse in show of sanctions defiance

Nuclear weapons

North Korea threatens to resume nuclear, long-range missile tests

Pyongyang's warning follows the weekend breakdown of North Korea-US nuclear talks in Sweden.

North Korea threatens to resume nuclear, long-range missile tests

North Korea

North Korea warns US, Europe against raising missile tests at UN

Countries concerned about North's test of submarine-launched missile in violation of Security Council resolutions.

North Korea warns US, Europe against raising missile tests at UN

North Korea

North Korea calls off nuclear talks with US

North Korea's chief negotiator accuses US of being 'inflexible' as talks, stalled since February, break down in Sweden.

United States

N Korea, US envoys to resume nuclear talks in Stockholm

The talks follow a missile test this week and are the first since Donald Trump and Kim Jong Un met at the DMZ in June.

N Korea, US envoys to resume nuclear talks in Stockholm

China

China displays new hypersonic nuclear missile on 70th anniversary

Beijing also showcased inter-ballistic missile capable of reaching US in 30 minutes during 70th anniversary parade.

China displays new hypersonic nuclear missile on 70th anniversary

Interactive

Interactive: How does your country vote at the UN?

We visualised 1.2 million votes at the UN since 1946. What do you think are the biggest issues facing the world today?

Interactive: How does your country vote at the UN?

Nuclear weapons

UN's Guterres warns of nuclear 'annihilation' at disarmament meet

With tensions between nuclear powers rising globally, the question is how useful talks about nuclear disarmament are.

UN's Guterres warns of nuclear 'annihilation' at disarmament meet

North Korea

N Korea pins hopes on Trump, but casts doubt on future talks

Senior foreign ministry official praises US president's 'bold' approach while pressing Washington to drop sanctions.

N Korea pins hopes on Trump, but casts doubt on future talks

Inside Story

Are hopes for a nuclear-free world realistic?

Thursday is International Day for the Total Elimination of Nuclear Weapons, a goal that looks increasingly less likely.

Iran

No UN breakthrough as Iran snubs talks until US lifts sanctions

France's efforts to arrange a meeting between Trump and Rouhani falters after US tightens punishing sanctions on Tehran.

Iran

Iran slams US for 'merciless economic terrorism'

President Rouhani warns world leaders 'a single blunder can fuel a big fire' as threat of war grips the Middle East.

Donald Trump

'Probably not': Trump rules out North Korea visit for now

US president also says he is 'sure' North Korean leader Kim Jong Un would 'love' to visit the United States.

'Probably not': Trump rules out North Korea visit for now