With US tensions running high over demise of agreement, Ayatollah Khamenei says Rouhani and Zarif did not implement landmark accord how he told them to

Amid rising tensions in region, Houthi rebels attack border town's airfield and military base

Foreign minister rejects Trump's offer of talks as long as Washington does not show 'respect,' says there will be 'painful consequences' in the event of escalation

Visiting Beijing, Iranian foreign minister warns of 'dangerous' escalation with US, says international community must do more than release statements

Official from country's atomic agency says move part of 60-day ultimatum laid down by President Rouhani for negotiating new terms

Amid rising tensions with US, Iranian president says he hopes Tehran can 'pass this difficult period with glory... and defeat the enemy'

Spokesman for country's atomic agency insists actions ordered by President Rouhani in response to US sanctions do not violate 2015 agreement

US president says he sent aircraft carrier group to the Persian Gulf because Iranians 'were threatening,' tells reporters 'we have information that you don't want to know about'

As White House escalates tensions, Democratic senators and groups call for legislation disallowing an attack on Iran without Congressional approval

Prime minister gives first Israeli response to announcement by Iran's Rouhani that Tehran will keep excess uranium, resume high-level enrichment if no new terms are set