Iran carried out secret nuclear activities with material not declared to the UN nuclear watchdog at three locations that have long been under investigation, the watchdog said in a wide-ranging, confidential report to member states seen by Reuters.

Iran lashes out at Austria after a report claims Tehran has an advanced nuclear weapons program, sparking diplomatic tensions and calls for explanations.

Iran's foreign ministry and the Iranian nuclear agency rejected the report, calling it "politically motivated" in a joint statement.

President Donald Trump believes his administration is “very close to a solution” on an Iran nuclear agreement and he has personally warned Israeli Prime Minister Benjamin Netanyahu not to disrupt the talks,

Western powers are preparing to push the U.N. nuclear watchdog's board at its next quarterly meeting to declare Iran in breach of its non-proliferation obligations for the first time in almost 20 years,

Iran has been seeking to bolster its air defences as the military prepares for the possibility of an Israeli or US strike against Tehran’s nuclear infrastructure if negotiations