The fresh revelations about Issa's actions will add further doubt to a pending nuclear energy deal between the UAE and the US. The deal, signed in the final days of George W Bush, is seen as vital for the UAE. It will see the US share nuclear energy expertise, fuel and technology in return for a promise to abide by non-proliferation agreements. But the deal needs to be recertified by the Obama administration and there is growing outrage in America over the tapes. Congressman James McGovern, a senior Democrat, has demanded that Hillary Clinton, the US secretary of state, investigate the matter and find out why US officials initially appeared to play down its significance.