"From the point of view of international law these actions are not forbidden, but you can also not ignore that in previous years a whole host of problems were uncovered in Iran's nuclear program," Lavrov said, Interfax news agency reported.
"Until these problems can be removed I think it is advisable to refrain from steps, and especially from statements, that merely heat up the atmosphere and create the impression that Iran really has made up its mind to ignore the international community, the United Nations Security Council and the IAEA," he said.
Iran launched a rocket it said was designed to carry its first locally made research satellite next year, showing advances in ballistics at a time when Western powers are already wary it may be developing a nuclear weapon.
Iran says its nuclear program is aimed at producing electricity.