Russian President Vladimir Putin will meet Iran's supreme leader Ayatollah Ali Khamenei during a visit to Tehran Monday, the Kremlin said, as Moscow goes on a diplomatic push over the Syria conflict. 

Talks with Iran's leadership will focus on "issues in bilateral relations, including atomic energy, oil and gas and military-technical cooperation", Putin's top foreign policy aide Yury Ushakov said Friday, with the Russian president also set to meet his counterpart Hassan Rouhani.