“When the United States and Britain stand together, our people and people around the world can become more secure and more prosperous…Ours is not just a special relationship, it is an essential relationship – for us and for the world”-joint statement by President Barack Obama and Prime Minister David Cameron
Basically, what Obama and Cameron are saying is that the British Empire (the only empire to stand on four corners of the world. those who believe in the last days of the Christian book of Revelation need to pay attention to that!) is going to fight to hold on to every piece of territory the Empire controls (or fight to gain territory it wants to control).
During World War 2, the U.S. and U.K. formed a “Special Relationship” to fight the Germans and Japanese (after all the United States and the British Empire were supposed to be mortal enemies).
That relationship continued, thanks to the propaganda of Winston Churchill and Senator McCarthy, with the Cold War against Communism. With the War on Terror the U.S. and U.K. have decided their relationship is now “Essential”.