Russia’s Gazprom has signed a memorandum of understanding in Tehran aimed at completing the partly-built Iran liquefied natural gas facilities at Bandar Tombak, but sources in Moscow have raised questions over the viability of Russian involvement, writes Vahe Petrossian.

Gazprom executive chairman Alexei Miller signed the MoU, along with a second wider gas co-operation MoU, late last week following talks with with Iranian Oil Minister Bijan Zanganeh and other officials in Tehran.