The head of Iran's atomic energy organisation, Mohammad Eslami, has arrived in Moscow for talks, Iranian state-run media said on Monday, as the UN considers whether to reimpose sanctions on Tehran over its nuclear programme. The European nations accuse Tehran of failing to abide by a 2015 deal with world powers that aimed to prevent it from developing a nuclear weapon. Iran denies having any such intention and Russia says it supports Tehran's right to peaceful nuclear energy. Any delay on reimposing sanctions would require a Security Council resolution. If a deal on an extension can't be reached by the end of 27 September, then all UN sanctions will be reimposed.