Reaction from around the world:

Iran

"The reasons for the shocking attacks on the World Trade Centre Twin Towers and the Pentagon should be sought inside the US. The world's sole superpower and major military player should also learn to assess its domestic and foreign policies at regular intervals and not wait to do so when terror strikes and reality knocks. After the colossal damage had been done to American life and property on Tuesday, President George Bush pledged to bring those responsible to 'justice'. Justice these days is a very rare commodity."

Amin Sabooni
Iran Daily, IRAN

SHOCKING - completely unexpected and quite unpleasant

A SUPERPOWER is a nation that has a very great amount of military and political power. In the Cold War period, the United States and the Soviet Union were superpowers, but now the US is the only superpower.

COLOSSAL - extremely large