Shock waves reverberated around the world from the suicide attacks by aircraft hijackers that flattened New York City’s signature World Trade Center and smashed a hole in the Pentagon. Many thousands are feared to have been killed in the attacks yesterday, which stunned the world, bringing condemnation from all sides and sowing confusion in financial markets. Rescue workers battled through the night after hijackers who seized four passenger aircraft flew two of them into the Twin Towers of the World Trade Center, one into the Pentagon, and one into a wood in rural Pennsylvania.