In pictures: Europe in shock

People across Europe were stunned as they watched the terrorist attacks in America - and their horrific aftermath - unfold. The reverberations were felt as security was tightened at potential targets in Europe.

A square in the Swedish city of Gothenburg becomes a sea of candles as people mourn those killed in the attack

In Berlin, an armoured personnel carrier was stationed outside the US embassy as floral tributes piled up

These Berlin school children feared the worst from the attacks - their sign reads "No World War 3"

Security was also tightened outside the US embassy in Madrid

Travellers across Europe faced chaos after US airspace was closed and flights cancelled

Russians paid their respects with flowers outside the US embassy in Moscow

And Russian papers were filled with apocalyptic pictures of the devastation in New York and Washington

US soldiers in Bosnia watched in horror as the world trade centre crumbled live on TV