Ali Bagheri warns that no matter how close talks in Vienna are to revival of 2015 pact, they can still fail until agreement is inked; top Iranian nuclear official to meet with IAEA

Oman has helped facilitate back-door diplomacy between the US and Iran; senior visit raises speculation of Oman's future involvement in Vienna negotiations

Supreme leader insists nuclear research is for peaceful purposes to produce energy; senior Iranian negotiator at Vienna talks says parties are 'closer than ever'

French foreign minister says Iran has a 'clear choice' in the coming days; Tehran says it wants to see US Congress issue statement on commitment to possible agreement

Foreign minister tells Financial Times that 'as a matter of principle' Iranians don't trust the words of any head of state, and in particular US president

But top Iranian security official accuses Western negotiators of pretending to come up with initiatives to avoid agreeing to any obligations

Russian diplomat says 'negotiations seem to be at the final stage'

Bennett's comments come as the Vienna talks aimed at salvaging the moribund 2015 accord enter a critical phase

Supreme National Security Council secretary Ali Shamkhani says this lack comes despite 'limited progress' made in Vienna negotiations

Prime minister tells INSS conference country will eventually be protected by 'wall of lasers,' announces campaign underway to weaken Iran, proxies