Political scenarios vary from a US return to the deal with sanctions relief over Iran to using military force against Tehran.
Unless the president finds a solution to the JCPOA impasse, the deal may become unsalvageable, further reducing international trust in the administration.
Prospects for the revitalisation of the nuclear deal have been getting dimmer as Iran’s new hardliner leadership wants the full implementation of the original agreement from 2015.
US wants to see what Iran is willing to do and remains "fully prepared" to return to Vienna to continue negotiations, says top US diplomat Antony Blinken in Kuwait.
Iranian diplomats are not prepared to engage with the US for nuclear talks as they wait for Raisi to replace Rouhani in August.
UN nuclear watchdog says it had received no reply from Tehran over the possible extension of a temporary agreement, covering inspections at Iranian nuclear facilities, which expired on Thursday as nuclear talks crisis looms.
Iran's president-elect Ebrahim Raisi says he has no plans to meet with US President Joe Biden, while calling on regional rival Saudi Arabia to halt its intervention in Yemen immediately.
Confrontation comes amid talks in Vienna between Iran and major powers on the mechanics of a US return to a landmark 2015 nuclear deal abandoned by then-president Donald Trump.
Though Vienna talks resume amid complications raised by Iran FM's accusation that Russia tried to scupper the pact, Moscow representative Ulyanov says all parties are led "by unity of purpose which is full restoration of nuclear deal."
European Union foreign policy chief Josep Borrell says both the US and Iran are really interested in reaching an agreement as they have been moving from general to more focused issues in the talks recently.
Foreign Minister Javad Zarif says the sabotage at the Natanz nuclear facility negatively impact atomic deal talks in Vienna where Russia is putting on a united front with Iran against the US and Europe.
It's clear that Israel does not want the Iran nuclear deal to be salvaged, but provocations may speed up re-negotiation.
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