“US President Barack Obama has called on the new Republican-controlled Congress not to impose more sanctions on Iran over its nuclear program, saying he will veto any such move.”
“'Additional sanctions on Iran at this time would undermine international unity and set back our chances for a diplomatic solution,' the US president said. [...] 'We'll see how persuasive I am. But if I'm not persuading Congress, I promise you, I'm going to be taking my case to the American people on this,' he warned.”
“British Prime Minister Cameron also opposed any new sanctions against Iran, arguing the world needed to 'create the space for negotiations to succeed.' He added that additional sanctions 'would be counterproductive and put at risk the valuable international unity.'”
“Iran and the six powers wrapped up their latest round of nuclear talks in Geneva on December 17, 2014, three weeks after they failed to reach a final agreement by a November 24 deadline despite making some progress. The two sides agreed to extend their discussions for seven more months until July 1, 2015. The scale of Iran’s uranium enrichment and the timetable for the lifting of anti-Iran sanctions are seen as major sticking points in the talks.”
It is characteristic that the US-Israel relations are not in the best shape, and this is not only due to the Israeli policy concerning Gaza, but also because the US are trying to approach Iran, and one reason is probably because they think that the Iranian army, which did not get involved in deleterious wars for many years, is suitable to contribute to the fight against the IS fighters.