Foreign minister says move can be reversed if Europe salvages nuclear deal, but warns if not, Tehran may move beyond only low enrichment

As Tehran breaks the limit set on its stockpile of low-enriched uranium under nuclear deal, top parliamentarian threatens Jewish state

Regular quarterly meeting in Vienna comes with Tehran poised to exceed uranium enrichment caps in wake of US pullout and skyrocketing tensions

Foreign minister rejects US president's notion of a short war as 'illusion,' says Washington 'not in a position to obliterate Iran,' as war of words escalates

Iranian president denounces sanctions against foreign minister Zarif; military spokesman says Washington ruptured path of diplomacy by also targeting supreme leader Khamenei

Islamic Republic's foreign minister targeted with fresh sanctions, along with its supreme leader, Khamenei

Trump describes move as 'strong and proportionate' response to Tehran downing an American drone, will add FM Zarif to list later this week

Zarif tweets graphic which he says shows flight path of drone into Iranian airspace earlier in May; Rouhani says US fueling tensions

Tehran claims it shot down surveillance aircraft over its territory and not international waters, as maintained by Pentagon; UN chief urges restraint

Officials concerned Iran may be emboldened after Trump appears to dismiss incident as a possible accident; White House invites House, Senate leaders for briefing