Terrorism ends when the broader culture refuses to tolerate it. There would be few if any suicide bombers in the Middle East if "martyrdom" were not glorified by imams and politicians, if pictures of local "martyrs" were not proudly displayed in West Bank grocery stores, if Muslim banks did not offer special "martyrdom" accounts to the relicts thereof, if schools did not run essay competitions on "Why I want to grow up to be a martyr".
From Phillip Adams, in The Australian:
Unlike those humdrum bombings in Baghdad, the slaughter in London was big news. And let's be clear about it: the people who died in the subway tunnels and on the bus were victims of the Iraq war. They died because of Blair's London Bridge, the one he built from the Thames to the Euphrates.
Steyn says that Moslem culture incubates terrorism, Adams says that it's Blair's (and by extension, Bush's) fault. It shouldn't be hard to determine which view I agree with.