Mustard gas was used in two attacks in Iraq's semi-autonomous Kurdish region in August last year, according to sources close to the global chemical-weapons watchdog.
Iraqi Prime Minister Haider al-Abadi has vowed to defeat the Islamic State militant group in the country this year.
Russian Deputy Prime Minister Russia Dmitry Rogozin in a visit to Baghdad offered to provide more military aid and step up commercial ties, potentially eroding U.S. influence in the war-torn country.
Iraqi Prime Minister Haidar al-Abadi has urged his country's Kurdish autonomous region to reject any plans for independence.
The Obama administration's plan to loosen tough new visa requirements for businessmen and journalists who travel to Iran has touched off strong resistance in Congress.
Iraqi Prime Minister Haidar al-Abadi announced he would reshuffle his cabinet and appoint technocrats to replace ministers appointed because of their political affiliations.
An Iraqi-led operation to retake the Islamic State (IS) stronghold of Mosul is unlikely to take place this year, a top U.S. intelligence official said on February 9.
Iraq's Mosul dam, already the world's most dangerous, is increasingly at risk of a spectacular failure that would deluge millions of people downstream, according to a U.S. study released by the Iraqi parliament.
Iraqi forces say they have recaptured territory around the western city of Ramadi from the Islamic State (IS) group.
The United States has charged the wife of an Islamic State (IS) leader killed last year with contributing to American hostage Kayla Mueller's death.
The Iraqi Army is deploying thousands of soldiers to a northern base to eventually retake the city of Mosul from the Islamic State (IS) extremist group, officials said on February 8.
Canada will end air strikes targeting the Islamic State extremist group in Iraq and Syria and pull out six fighter jets within two weeks, Canada's prime minister has announced.