TEHRAN, July 6 Moscow and Tehran have concluded a bilateral currency agreement to ensure the liquidity of national currencies in commercial transactions, said the head of the Central Bank of Iran, Mohammad Farzin, as quoted by the Tasnim agency.< br />«Following the results of a bilateral meeting with the head of the Central Bank of Russia, a bilateral currency agreement was signed in order to ensure the liquidity of national currencies for commercial transactions; the necessary instructions will be announced to the banking system and businessmen soon after the launch of a platform for the implementation of transactions with the Iranian Currency and Gold Exchange Center offshore rials,» Farzin said.