The state Department has proposed to Iran a few conditions, for failure to comply with which Washington has threatened to impose fresh punishment. So, the US told about the readiness to apply restrictive measures in case of expansion of the Bushehr nuclear plant and the removal of enriched uranium from Iran in exchange for uranium ore. In addition, Washington has asked in a persistent form from Tehran to abandon the enrichment of radioactive materials and recycling of plutonium. the state Department stressed that North America will not tolerate uranium enrichment by Iran and the storage of heavy water above the existing limits. the United States also wanted to get Tehran to report to the IAEA about " former military nuclear program." the state Department said it reserves the right to further strengthen unilateral nuclear restrictions on Iran. Iran and "six international mediators" ((Russia, USA, Britain, China, France, Germany) signed in 2015, the agreement on the settlement of the longstanding problem of the Iranian atom. Implementation of requirements was removed from Tehran before conducting the economic punishment the US, the UN security Council and European Union. However, last year the head of Donald trump announced the US withdrawal from the Treaty with Iran and the restoration of all penalties against Tehran. In addition, Washington said about aims to bring Iranian oil exports down to zero and tried to convince her buyers to abandon this procurement. <span style="color:darkgray