US: Core sanctions should stay until Iran addresses all concerns

A top US official on Thursday held out the prospect of limited sanctions relief for Iran if it takes confidence-building steps to allay concerns about its atomic program, but said the fundamental sanctions must stay until all concerns have been dealt with.

Under Secretary of State for Political Affairs Wendy Sherman also told lawmakers it would be helpful for the US Senate to hold off on imposing additional sanctions on Iran ahead of an Oct. 15-16 meeting with Iranian officials in Geneva. (Reuters)