And here, Tony Blair has grown sterner. After September 11, 2001, he now thinks, he underestimated the power of the bad ''narrative’’ of Islamist extremists. That narrative – that ''The West oppresses Islam” – ''is still there. If anything, it has grown.’’ It seeks ''supremacy not coexistence’’. He fears that ''The West is asleep on this issue’’, and yet it is the biggest challenge. In Africa, all the good things he sees through his Africa Governance Initiative face ''this threat above all others’’. In ''Sudan, Mali, Nigeria, outbursts in Tanzania and Kenya’’, sectarian Islamist extremism is the great and growing problem. By implication, Mr Blair seems to doubt President Obama’s outreach to Islam, because it tends to deal with the wrong people. Since Obama’s Cairo speech in 2009, ''the whole context has changed’’. The Muslim Brotherhood is taking over large parts of the Arab world, and ''the people without the loudest voices are desperate for our leadership’’.