What does the enemy want?

Two interesting articles with opposing views on whether or not the invasion of Iraq was the root cause of last week's bombings in London:
Seumas Milne argues that to ignore the link to the Iraq invasion is to insult the dead: "We can't of course be sure of the exact balance of motivations that drove four young suicide bombers to strike last Thursday, but we can be certain that the bloodbath unleashed by Bush and Blair in Iraq - where a 7/7 takes place every day - was at the very least one of them. What they did was not "home grown", but driven by a worldwide anger at US-led domination and occupation of Muslim countries".
http://www.guardian.co.uk/attackonlondon/comment/story/0,16141,1528127,00.html
Nick Cohen says that "it's a parochial line of reasoning to suppose that all bad, or all good, comes from the West - and a racist one to boot. The unavoidable consequence is that you must refuse to support democrats, liberals, feminists and socialists in the Arab world and Iran who are the victims of Islamism in its Sunni and Shia guises because you are too compromised to condemn their persecutors".
http://www.guardian.co.uk/Columnists/Column/0,5673,1525260,00.html