Vienna-based Western diplomats said the powers had agreed compromise language for a draft resolution, to be put to governors for approval by Friday, after Western states and Russia overcame divisions sparked by the IAEA's report on Iran.
But the resolution will not satisfy those in the West and in Israel, Iran's arch-enemy, who had hoped Amano's document would trigger concrete international action to rein in Tehran.
"It (the IAEA resolution) will maintain pressure on Iran," one Western diplomat said. He and others said they were waiting for Beijing to formally approve the text before putting it to the board meeting, which runs through Friday.
In his toughest public statement so far on Iran's contested nuclear program, Amano said, "The information indicates that Iran has carried out activities relevant to the development of a nuclear explosive device."