Iraq has signed contracts to buy Russian arms worth $4.2bn (£2.6bn; 3.2bn euros) this year, Russian news agencies report.

Moscow, the main supplier of arms to Iraq under Saddam Hussein, thus becomes the country's second-biggest arms supplier after the US.

The new contracts were announced after talks between the two countries' prime ministers near Moscow on Tuesday.

Reports suggest attack helicopters and missiles are included in them.