Iran is ready to join the international freezing of oil production, but only after it will be able to reach the production level of 4 million barrels per day, the head of Iran's Ministry of Oil Bijan Namdar Zanganeh stated.
"Until oil production will reach 4 million barrels per day it is not necessary to work with us in this direction, only after that will we begin to cooperate with them," RIA Novosti quoted him as saying.
