One World Trade Center is a fitting tribute to 9/11 victims, John Riordan reports from New York

THE ACT of remembering September 11, 2001 is fraught with difficulty, both for survivors whose trauma lingers to this day and for the fortunate majority who will never know the stench of death which overcame that sunny morning in Lower Manhattan.

Eyewitnesses today spoke of their horror as they saw terrorist attacks reduce parts of New York to crumbling, smoking ruins.