The US and Iran are are planning to hold landmark talks in Baghdad in the next few weeks to discuss the security situation in Iraq, the Whitehouse has said.
Ryan Crocker, the US ambassador to Iraq, will represent Washington in the landmark talks with Tehran, which has not had diplomatic relations with the US in over 25 years.
Gordon Johndroe, a Whitehouse spokesman, said: "You could expect a meeting in the next few weeks with ambassador Crocker and Iranians.
"The purpose is to try to make sure that the Iranians play a productive role in Iraq."
The US has accused Tehran of aiding Shia militia groups and attacking US soldiers, claims vehemently denied by Tehran.
Tensions have also intensified in recent months over the arrest by the US of seven Iranians accused of being intelligence operatives