In a telephone call with his Russian counterpart, Iran's Foreign Minister has said a good deal in the Vienna Talks was available if the US would act logically.

 In the telephone talk on Thursday, Iran's Hossein Amir-Abdollahian told Russia's FM Sergei Lavrov that Tehran was calling for the initiative from all parties in the JCPOA talks in Vienna.  
Amir-Abdollahian said Iran was determined to reach a strong and sustainable agreement while observing its red lines. 
He appreciated Russia's positive stance in support of an agreement approved by Iran.
Russia's Lavrov for his part said that Moscow would continue to make reaching a good agreement feasible 
Most of the countries participating in the Vienna Talks want the negotiations to be concluded more quickly, but reaching a final agreement was subject to the US political decisions on a few remaining key issues.
Iran's international nuclear agreement or the so-called Joint Comprehensive Plan of Action (JCPOA) was signed between the country and P5+1 countries (Russia, China, UK, Germany, France, and the US) in 2015, but the US scrapped it on May 18, 2018, re-imposing more sanctions on Iran.
A series of sanction-lifting talks then was initiated in Vienna - Vienna Talks - in Vienna, this time without the US, but between Iran and the P4+1 group.
The eighth round began the Vienna Talks began on December 27.