A delegation from Hamas, the militant Palestinian group that controls Gaza, is currently visiting Moscow, Russian Foreign Ministry spokeswoman Maria Zakharova told a weekly briefing on Thursday, without providing any further details.

Russia's state-run RIA news agency, quoting a source from the Palestinian delegation, said senior Hamas member Abu Marzook was among those visiting Moscow.

Russia has ties to all key players in the Middle East, including Israel, Iran, the Palestinian Authority and Hamas.

Moscow has repeatedly blamed the current crisis on the failure of U.S. diplomacy, and called for a ceasefire between Israel and Hamas and the resumption of talks aimed at finding a peace settlement.

Separately, Zakharova also said that Iran's Deputy Foreign Minister Ali Baghiri Kani was also currently visiting Moscow and had held talks with Russian Deputy Foreign Minister Mikhail Galuzin. Baghiri Kani is Iran's chief nuclear negotiator.