A thick layer of dust has blanketed the otherwise clear azure sky in Tehran and many other Iranian provinces, forcing authorities to order the closure of schools, universities, and public offices.

Russians will soon start “executive operations” on developing two oil fields in Iran, Managing Director of the National Iranian Oil Company Mohsen Khojastehmehr has said.

The state-run NIGC says Iran’s natural gas production will increase by 45 mcm in the year to March.

Iranian firms are awarded around $3 billion worth of contracts for development of oil and gas fields.

Iran’s state oil company NIOC says it is ready to double oil exports of foreign problems are solved.

A report shows Chinese private buyers reduced their purchase of Iranian oil in April.

Iraqi authorities indicate they have persuaded Tehran to increase gas supply to the Arab country.