We are in deep sorrow for the cataclysm that has been visited upon the city of London, just one day after we extended our congratulations on its winning the 2012 summer Olympics.

With all our hearts, we offer profound condolences to the innocent victims and their families.

British Prime Minister Tony Blair said it was "reasonably clear" the series of explosions that disrupted and paralyzed London's transport system yesterday were terror attacks.

But it remains unclear who carried them out and why, though there has been an "Al-Qaida statement" posted online, claiming responsibility for the attacks.

Whoever it was, whatever the intention was, there is no justification for the use of violence against innocent civilians.

It was especially cruel and barbaric to target hatred at a city that was celebrating the honour of hosting one of humanity's most respected festivals highlighting peace and unity, in a country which is hosting a summit of major world leaders discussing issues of global concern.

Chosen through ballot to host the world's most important sports gala, the city of London and its citizens deserve a secure environment to provide an enjoyable venue for the event expected to entertain people around the world.

Besides ruining a regular day in the life of Londoners, the tragic ramifications significantly distracted leaders meeting in Britain from their original schedule. They were supposed to compare notes on poverty alleviation and global climate change.

The bloody distraction may yield lasting impact on how the leaders determine their priorities.

If Prime Minister Blair's judgment is ultimately confirmed, the fatal blasts will indeed be a grim reminder that terrorism remains a clear and present danger, and more has to be done about it.

The leaders' collective presence before the cameras behind the British prime minister as he addressed his nation was a symbol of solidarity and moral support.

If the attacks had been plotted to create a sense of fear, it backfired. It has instead aroused a shared belief in collective defence against acts of terror.