Whatever he does in office, no man can live up to the high expectations of the world, but we have been changed by his election. Obama's inauguration is a historic global achievement, a major milestone in the journey of a powerful nation.
I agree with the British Legion that we have a responsibility to support our troops and support their families, particularly when we are asking people to do very difficult and dangerous things for our security.
There are some days when history is made. Yesterday was one - and I was honoured to be in Washington to watch Barack Obama being sworn in. During his soaring inaugural address, the new president gazed over a teeming National Mall that was crowded with more than a million people.
While we are deploying troops in their thousands, we lose the chance to build up their basic skills.