New sanctions by Washington against Tehran at this stage would give the Iranians an excuse to quit negotiations on Iran's nuclear program.
This opinion was expressed by US President Barack Obama in an interview with CNN.
"For us to undermine diplomacy at this critical time, for no good reason, is a mistake. And that what we need to do is to finish up this round of negotiations, put pressure on Iran to say yes to what the international community is calling for," TASS cited Obama.
The President stressed that he will veto any legislation that imposes additional sanctions.
Earlier, Iranian Foreign Minister Mohammad Javad Zarif also said that the introduction of new sanctions against Iran would be counterproductive.