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.

The UN nuclear chief says it is his duty to “alert the world” about suspected work in Iran to develop atomic bombs, as major powers prepared to intensify the pressure on theIslamic state.

The head of the UN nuclear agency has urged a worldwide rethink of safety measures to prevent new nuclear disasters.

The UN nuclear watchdog voted today to report Syria to the UN Security Council for violating its safeguard agreements, citing Syria’s undeclared construction of a covert nuclear reactor and refusal to supply information.

In a major turnaround, Syria is pledging full co-operation with United Nations attempts to probe strong evidence that it secretly built a reactor that could have been used to make nuclear weapons, according to a secret document.

The situation at Japan’s stricken nuclear plant is “very serious,” but does not appear to be deteriorating, says a senior official of the UN atomic agency.

The head of the UN nuclear watchdog agency says he cannot guarantee that Iran is not trying to develop atomic arms.

The head of the UN nuclear watchdog agency made a dangerous mistake by criticising Iran for not fully co-operating with it, Tehran’s nuclear chief said today.

IRAN’S supreme leader and armed forces commander-in-chief Ayatollah Ali Khamenei said yesterday the country does not believe in and is not seeking atomic weapons, state television reported.

A stand-off pitting Iran against most others delegations at a 130-nation nuclear conference deepened today, with organisers adjourning the third straight session in as many days without breaking a deadlock over the language of the meeting’s agenda.

Nuclear watchdog agency chief Mohamed ElBaradei warned today in accepting the 2005 Nobel Peace Prize that humanity faces a choice between nuclear weapons and survival.