US president George W Bush has vowed that the "war on terror" would continue in the wake of the bomb attacks on London this morning.
Speaking from Gleneagles Hotel in Scotland, the the G8 leaders are gathered for their annual summit, Mr Bush told reporters: "The war on terrorism goes on. I was most impressed by the resolve of all the leaders in the room. Their resolve is as strong as my resolve."
He added: "We will not yield to these people - we will not yield to the terrorists. We will find them and bring them to justice.
"And at the same time, we will spread an ideology of hope and compassion that will overwhelm their ideology of hate," he said.
"This morning I have been in contact with the Homeland Security folks. I instructed them to be in touch with local and state officials about the facts of what took place . . . in London and be extra vigilant," he said.
"I urged them to be extra vigilant as our folks head to work," he added.