Iran’s supreme leader has sent his foreign minister to Moscow to ask President Vladimir Putin for more help from Russia after the biggest US strikes over the weekend, Reuters reports.

A senior source told Reuters that Iranian Foreign Minister Abbas Araqchi was due to deliver a letter from Khamenei to Putin, seeking the latter’s support.

Iran has not been impressed with Russia’s support so far, Iranian sources told Reuters, and the country wants Putin to do more to back it against Israel and the United States. The sources did not elaborate on what assistance Tehran wanted.

The Kremlin said that Putin would receive Araqchi but did not say what would be discussed.

Araqchi was quoted by the state TASS news agency as saying that Iran and Russia were coordinating their positions on the current escalation in the Middle East.