According to spokesman Nassir Nour the deal was struck during Prime Minister Haider al-Abadi visit to Moscow earlier last week. He said the timetable for arrival was withheld for security reasons.
“All I can say is we will receive them soon,” Nouri told reporters on Wednesday.
Russian President Vladimir Putin met Abadi on May 21, pledging to provide further assistance to the government as it battles ISIS.
Iraq’s military is preparing to launch an attack on the ISIS-held Ramadi with the assistance of an estimated 20,000 Shiite militiamen currently being staged in the town of Amiriyah.
ISIS seized large parts of Anbar starting in early 2014 and captured Ramadi earlier this month.
