In a letter sent to U.S. President Barack Obama last week and released Monday, the 10 senators said the U.S. and other countries should consider a “suspension-for-suspension” agreement, in which Iran suspends uranium enrichment and Washington suspends the implementation of new sanctions.
The report quoted a senior U.S. official, speaking on condition of anonymity, told reporters that “no one should expect a breakthrough overnight” and described the upcoming negotiations as “very, very difficult.”
The official said incremental steps are needed to build confidence and “put time on the clock” so negotiators can work through complex political and technical issues.