Discrepancies between the two sides' version of the deal have emerged, and key details of the agreement are yet to be negotiated.

The European Union and the US have announced a political agreement that will completely reset the €1.7 trillion ($2 trillion) transatlantic trade relationship.

The EU has pledged to buy $750 billion of energy from the U.S. in exchange for a lower rate tariff rate in its trade deal, but analysts say this is unrealistic.