President Barack Obama and Prime Minister David Cameron have written a joint article for the Times at the start of the US State Visit to the UK.
The two leaders reaffirmed the ties between Britain and the United States, calling the relationship "essential."
Mr Obama and Mr Cameron wrote: "It's not only history that binds us. Whether fighting wars or rebuilding the economy, our needs and beliefs are the same.
"Our efforts against al-Qaeda - and our mission in Libya - are critical to the type of world that we want to build. Bin Laden's ideology is one that has failed to take hold. Gaddafi's reign represents the region's past.
"We stand for something different. We see the prospect of democracy and universal rights taking hold in the Arab world, and it fills us with confidence and a renewed commitment to an alliance based not just on interests but on values.
"Yes, we are mindful of the risks and aware of the uncertainties. But we stand together, optimistic and confident that our two nations can achieve peace, prosperity and security in the years ahead".
Read the article in full here.
Promoted by Alan Mabbutt on behalf of the Conservative Party, both at 30 Millbank,
London, SW1P 4DP