Change the negotiation team, an American request?

We have three story versions:

This is the Kurds version:

Accord­ing to Kur­dish MP Mah­mud Oth­man, Maliki is not sat­is­fied with the For­eign Min­istry team and want to super­vise the nego­ti­a­tion by him­self. That is why he chose the new team mem­bers from his loyalists.

But it is unknown if Maliki wants to remove the Kurds from the nego­ti­a­tions because there is no offi­cial state­ment yet.

The gov­ern­ment version:

Announced by the min­is­ter of inter­nal affairs Al-Bolani say­ing that the change is to give the nego­ti­a­tion processes a great deal of flexibility.

The third ver­sion is on the same link above quot­ing Al-Askari, the United Iraqi Alliance MP who said:

The Prime Min­is­ter decided to change the nego­ti­at­ing team after a request issued from the Amer­i­can side because they wanted to be nego­ti­ate with fig­ures close to al-Maliki.