The sanctions-lifting Vienna talks appear to have reached its last leg. Although the 8th round of talks has begun, voices from lawmakers in Washington have increased in opposition to the deal.
Thirty-three US Republicans have called for a review and a vote on any Iran revival deal. The senators have warned Biden that they will do everything in their power to block a possible deal.
And that has prompted a response from Iran, in which it has said there is no coherence in the country to make political decisions.