Attack on Iranian centrifuges, uncovered in 2010, required operative to carry sabotaging software into Natanz site and deliver it to control systems

Treasury sanctions two networks it says procured parts for Tehran's military organizations and facilitated proliferation activities

Ministers said to cite US president's dialogue with North Korea's Kim Jong Un as disturbing precedent, 'but our capacity to influence and confront Trump is extremely limited'

French President says G7 diplomacy created conditions for historic summit; Trump says meeting will require 'correct circumstances' but sit down will have to happen

Trump says there is 'unity' among leading industrial nations group on preventing Iranians from obtaining nuclear weapons, reassures he is not seeking regime change in Tehran

Shaul Chorev, an ex-rear admiral who led Israel's Atomic Energy Commission, says the nuclear deal was 'reasonable,' doubts Trump will get a better one, and sounds a maritime alert

In rare move against another country's top diplomat, Washington freezes Mohammad Javad Zarif's assets, appearing to close door on negotiations

Tehran pessimistic about deal's prospects, while Europeans plan to raise subject of Iran's 'proven violations of their commitments' amid rising Gulf tensions

'Cooler heads prevailed' source tells Reuters, weeks after Mnuchin said new penalties on the foreign minister would be announced in coming days

10 months after PM identified 'secret atomic warehouse' in Tehran, UN inspectors reportedly conclude that it was indeed used as a nuclear storage facility