Country's nuclear agency chief, Ali Akbar Salehi, says it will resume adhering to nuke deal's terms if 'other parties' do so

Tehran says IAEA must 'prevent paving ground for misunderstanding' after Europeans push back on uranium metal development plan following publication in watchdog's report

French FM warns Trump's 'maximum pressure' tactics only increased risk posed by Tehran; comments come after Iranian announcement of advancing research on uranium metal production

Britain, France and Germany say Tehran has 'no credible civilian use' for the material, which it says it is now researching in breach of nuclear deal

The president has the sole authority to order a US nuclear attack, but some safeguards do exist

'This unhinged president could not be more dangerous,' House speaker says as Democrats meet to consider impeaching Trump for inciting riot on Capitol

Reactions could include federal indictments, sanctions, counterattacks and even exposure of Kremlin corruption, experts say

Tech giant issues call-to-arms after attack on US government institutions blamed on Russia; singles out Israel's private sector, NSO Group as potentially dangerous going forward

'They got into everything,' one official says as federal authorities express growing alarm over breadth and depth of intrusion into government networks, likely by Russian actors

A team of gunmen assassinated alleged head of Iranian nuclear weapons program, several of his bodyguards, after stopping vehicle with a hidden explosive, local reports say