I think it is only apt to leave two quotations concerning the terrorist attacks in London today as my main thoughts.
It's important, however, that those engaged in terrorism realize that our determination to defend our values and our way of life is greater than their determination to cause death and destruction to innocent people in a desire to impose extremism on the world.
Whatever they do, it is our determination that they will never succeed in destroying what we hold dear in this country and in other civilized nations throughout the world.
Nothing you do, no matter how many of us you kill, will stop that flight to our cities where freedom is strong and where people can live in harmony with one another
Edit to add:
Interesting things from all over the net concerning these things.
Here is the full text of Livingstone’s statement concerning the bombings.
The Counterterrorism Blog is something you should be keeping an eye on at least once a week.