Why not?

Moscow (AFP) – President Vladimir Putin on Monday eased restrictions on Russian companies working on Iranian enrichment sites as he travelled to Tehran for his first visit since 2007.

A decree Putin signed on Monday enables Russian firms to help modify centrifuges at the Fordo enrichment site and help Tehran redesign its Arak heavy water reactor.

Russian companies can now also carry out activities linked to Iranian exports of enriched uranium of more than 300 kilograms in exchange for the supplies of natural uranium to Iran, the Kremlin decree said.