So we mustn't lower our guard in any sense because of what has happened in terms of the death of Osama Bin Laden and we are certainly not doing that. The terror threat level here in the U.K. remains at severe and we're very conscious of the need to continue that.
To be elected president you have to do more than tear down your opponents. You have to give the American people a reason to vote for you - a reason to hope - a reason to believe that under your leadership America will be better.
