US President Barack Obama has said the annual act of remembrance for the victims of the 9/11 attacks provides the chance to recommit the nation's values.
In an address at the Pentagon in Washington, Mr Obama said: "No act of terrorism can change what we stand for."
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In Berwick-upon-Tweed - the town at the northern-most tip of England - history has taught them that no border necessarily lasts forever.
His car was about to get towed away. But he had other ideas.
He fell 30 feet to the floor. But despite the drama, it appeared the show must go on.