BBC NEWS | UK | London bombs killed 'at least 50'
All terrorism is an extreme expression of tribalism, which is the most powerful force in the world today. More powerful than the combined military of US, China and Russa.
Unless we sort out the growing inequality in Africa we will find new protest movements grow up which will make Al Qaida look like a mosquito bite.
450 million children are growing up in households across Africa that survive on $2 a head or less each day. Many see Western lifestyles on TV in village bars and towns... and they see their own.
This issue is perhaps the greatest moral challenge to our world today.