"Such irresponsible statements could affect our co-operation with Britain".
More than ever, Europe is at the heart of our co-operation.
Our co-operation on these issues remains a priority for the United States".
Our co-operation with Margaret Thatcher went beyond the routine of partnership.
But there is huge potential to grow this further and to expand our co-operation across new sectors.
Our co-operation with the US in the fight against terrorism has been put into question by the NSA revelations".
Ainsworth said: "We must increase our co-operation with our international partners to deliver defence more effectively and efficiently".
Prof Keith Mason, chief executive of the STFC and chairman of the BNSC governing body, said: "This joint report represents a milestone in our co-operation with Nasa.
But we need to work out if they do want to surveil here and they want our co-operation, we have some mechanism for achieving it".
But too often our co-operation is limited to our traditional allies, and by the perception of different interests which would require sustained dialogue to resolve.
As a concession, MEPs will now be invited to preparatory meetings with EU diplomats, which Tusk described as "a very constructive method of our co-operation".
