Video of Barak Obama taking oath as the 44th president of the United States of America

As whole world watches and more than a million crowd gathers from all over America gathers to see how Barack Hussein Obama claimed his place in history as America's first black president, summoning a dispirited nation to unite in hope.

Screams filled the air as Obama waved a gloved hand at onlookers crammed behind barricades, with the First Lady Michelle Obama at his side.

President Obama used his Inaugural Address to promise the regeneration of an America many in recent years had feared lost.

Speaking directly to the millions who crowded around televisions across the world as much as to Americans, President Obama said the United States was “ready to lead once more” despite the ravages of protracted wars and a falling economy.

But he coupled that with a vision of an America that exercises its power with a sense of justice, humility and restraint, and an America that, while believing its values still light the world, pledges to promote them through cooperation and understanding as much as military might.

With a steel never so pronounced in his campaign, he challenged America’s adversaries — and, recently, some of its oldest friends — who have spied an America diminished by economic distress and war, and heralded a new world order in which America would give up much of its power.

Mr. Obama’s address, which called on Americans to rally against “a nagging fear” that decline is inevitable. While offering a “new way forward to the Muslim world,” and warning dictators that they are “on the wrong side of history,” he definitely did not sound like George W. Bush in his challenges to those who spread terror and destruction. “You cannot outlast us; we will defeat you,” he said.