US president Donald Trump blamed the Obama administration for lifting sanctions just as Iran's government was facing "total collapse".

A brute force cyber attack on the UK parliament that compromised MPs' email accounts was carried out by Iran, it has emerged.

The Trump administration has again told Congress that Iran is complying with the nuclear deal, but insisted Tehran would face consequences for breaching "the spirit" of the agreement.

Brazil is planning to fight the zika virus by zapping millions of male mosquitoes with gamma rays to sterilise them and stop the spread of the virus linked to thousands of birth defects.

Iran has met a key requirement of a nuclear deal with six world powers by completing the transfer of most of its enriched uranium to Russia, a senior unnamed Russian diplomat has said.

Investigation had to be ended as part of internationally agreed deal

The UN Security Council has unanimously endorsed the landmark nuclear deal between Iran and six world powers.

THERE is an apocryphal tale of a verbal joust between Soviet leader Nikita Khrushchev and US president John F Kennedy during the Cuban missile crisis of October, 1962.

Iran nuclear talks passed their second deadline in a week yesterday, casting new questions about the ability of world powers to cut off all Iranian pathways to a bomb through diplomacy. But the parties agreed to continue their talks.

Russia has signed a contract to build two more nuclear reactors in Iran to be possibly followed by another six, a move intended to cement closer ties between the two nations.

Nearly 28 years ago, the Chernobyl disaster struck Ukraine. With the prospect of a Russian invasion looming, all sides should beware of atomic warfare, says Bennett Ramberg

Iran has agreed to open its nuclear activities to greater purview for UN experts seeking to revive their probe into suspicions that Tehran might have worked on atomic weapons.

Iran has started to shut down its most sensitive nuclear work as part of a landmark deal struck with world powers, state media said today.

Inspectors from the UN nuclear agency have arrived in Tehran to visit a nuclear facility that has long been off-limits to outside experts, an Iranian news agency has said.

Nuclear experts have begun the delicate task of recovering a stolen shipment of highly radioactive cobalt-60 abandoned in a Mexican field.

With a first round of nuclear negotiations with world powers ending without agreement, Iranian officials looked ahead last night to parallel talks with the UN’s nuclear chief amid reminders that concessions by Tehran have limits.

Some evacuees from the Fukushima nuclear catastrophe will have to wait years longer before they can return home after Japan admitted its radiation clean-up in the most contaminated towns is behind schedule.

Iranian and UN officials have held a “constructive” meeting on resuming a probe of allegations that Tehran has worked on atomic arms in talks seen as a test of pledges by Iran’s new president to reduce nuclear tensions.

Iran’s new president has called on Israel to join an international treaty banning the spread of nuclear weapons, chiding the Jewish state for being the only Middle East nation that has failed to do so.

Russia has warned that a US strike on Syria’s atomic facilities might result in a nuclear catastrophe and is urging the UN to present a risk analysis of such a scenario.

Japan’s nuclear regulator has upgraded the rating of a leak of radiation-contaminated water at its tsunami-hit nuclear plant to a “serious incident” on an international scale.

The US National Security Agency has bugged the United Nations’ New York headquarters, Germany’s Der Spiegel weekly said yesterday in the latest in a series of reports on US spying that has strained relations between Washington and its allies.

The United Nations Security Council has refused to back a report by a panel of experts which unanimously concluded that Iran broke UN sanctions when it launched ballistic missiles a year ago.

Iran’s foreign ministry has said the country is a committed signatory to the Nuclear Non-Proliferation Treaty and will continue co-operating with the UN nuclear watchdog agency.

Senior officials of the UN atomic agency have left Iran without a hoped-for deal that would have led to the resumption of a probe into allegations that Tehran worked secretly on nuclear arms.

A senior UN official said his team made headway during talks in Tehran meant to restart an investigation into suspicions that the country may have secretly worked on a nuclear arms programme.

Iran is poised to double output of higher-enriched uranium that can be turned easily into the core of a nuclear warhead, the UN nuclear agency says.

The EU has imposed a new range of sanctions on Iran intended to hit the country’s treasury and increase pressure on its Islamic regime over its nuclear programme.

China has urged Iran to take "a flexible and pragmatic approach" in international talks over its nuclear ambitions.

The UN nuclear agency has found traces of uranium at Iran’s underground atomic site enriched to higher than previous levels and closer to what is needed for nuclear weapons, diplomats say.

Diplomats from six world powers offered Iran new proposals today to ease international concerns about its nuclear programme, but appeared to reject Tehran’s appeals to ease economic sanctions.

The head of the UN nuclear agency has flown to Tehran on a delicate mission that - if successful – could finally lift the veil on whether Iran is seeking atomic arms while strengthening the Islamic Republic’s negotiating hand in crucial nuclear talks with six world powers later in the week.

The UN nuclear agency chief will fly to Tehran over the weekend to sign a deal meant to allow his organisation to resume probing Iran’s disputed nuclear programme.

With more than 90% of the EU’s river basins affected by nitrate and phosphorous pollution, the European Commission has recommended use of technological advances that can slash waste and improve productivity.

A robust international nuclear safety action plan is being implemented in the wake of the Fukushima disaster, writes Yukiya Amano

The European Union said today that world powers have agreed to a new round of talks with Iran over its nuclear programme, as Tehran gave permission for inspectors to visit a site suspected of secret atomic work.

Iran has said it will allow UN inspectors access to a secret military complex where the UN nuclear agency suspects atomic work has been carried out.

The head of the UN nuclear agency has “serious concerns” that Iran may be hiding secret atomic weapons work and admits he failed in his latest attempt to unearth them.

Iran has rapidly ramped up production of higher-grade enriched uranium over the last four months, the UN nuclear agency says in a confidential report.

A United Nations team visiting Iran have no plans to inspect the country’s nuclear facilities but will only hold talks with officials in Tehran, a Foreign Ministry spokesman said today.

Senior UN inspectors arrived in Iran yesterday to push for transparency about its disputed nuclear programme, and several European states halted purchases of Iranian oil as part of Western moves to pile pressure on a defiant Tehran.

UN nuclear inspectors arrived in Iran today in the latest push to hold talks about how far the country’s controversial nuclear programme has come.

Iran has halted oil shipments to Britain and France, the Oil Ministry said today, in an apparent pre-emptive blow against the European Union after the bloc imposed sanctions on Iran’s crucial fuel exports.