Diplomats say if Tehran does not show seriousness, 'we'll have a problem'; Iran says all previous agreements up for negotiation

As nuclear talks resume in Vienna, official says Israel pushing for 'upgraded agreement' to restrict Tehran's nuclear program along with development of 'significant attack plan'

On last leg of his 3-day trip to London and Paris, FM urges European powers to ensure sanctions on Iran are not removed, warns Tehran just buying time to push ahead nuke program

Danny Citrinowicz, ex-head of Military Intelligence research, says politicians' inability to adopt a nuanced approach led to 'colossal' policy failure, sped up Tehran's nuke effort

In phone call with France's Macron, Iranian president says Washington 'must gain the confidence' of Tehran in order for the latest negotiations to be productive

French president speaks with his Iranian counterpart, calls for swift return to failing 2015 pact; Raisi presses Macron to see that US sanctions are soon lifted

Iran's top negotiator and civilian nuclear chief both indicate nothing has been agreed on, previous rounds of nuclear talks can be renegotiated

Speaking to Conservative Friends of Israel, FM says Israel will defend itself; Boris Johnson, in raucous address, says Tehran's regional behavior must change

Tehran capable of producing 90% enriched uranium within weeks, defense figures have reportedly warned American officials, as talks restart in Vienna

'This opportunity is not a window that can remain open forever,' Iranian FM says as negotiators meet in Vienna after 5-month hiatus