After taking the presidential oath a few minutes past noon (Washington DC local time), Barack Hussein Obama in his inaugural address, summoned America to "a new era of responsibility."
On a day that in itself was historical and in a speech in which he laid out an outline of a key aspect of his foreign policy, the best lines for me were these - from more than halfway through his address:
"To those who cling to power through corruption and deceit and the silencing of dissent, know that you are on the wrong side of history, but that we will extend a hand if you are willing to unclench your fist.
To the people of poor nations, we pledge to work alongside you to make your farms flourish and let clean waters flow; to nourish starved bodies and feed hungry minds.
And to those nations like ours that enjoy relative plenty, we say we can no longer afford indifference to the suffering outside our borders, nor can we consume the world's resources without regard to effect. For the world has changed, and we must change with it"
UPDATE: FP Passport's scientific poll agrees with our choice on the highlight of the speech