The idea of Guevara as a latter-day Don Quixote, setting out on his adventures to undo wrongs and bring justice to the world, and, despite a series of disastrous encounters, managing to survive with spirits undiminished until the very end, is one that appeals to the romantic in all those who see themselves as revolutionaries.

The ordinary people of Zimbabwe, who have experienced decades of repression and hardship, are rejoicing and are optimistic following the dramatic removal of Robert Mugabe from power. But very soon there will be a renewed struggle for the future of Zimbabwe. And the outlook remains very uncertain.

I cannot agree with Armele Choplin that "Mauritania is awash with Maghrebin extremists whose influence continues to grow" (Mauritania: Between Islamism and terrorrism; ). The attack on French tourists in December 2007 was claimed as the work of organised terrorists operating from Algeria, but this was never proven.

There is much alarmist talk of Al Qaeda in the Sahel, which has been used to justify a significant US presence and involvement in the region. It was, incidentally, a supposed fear of links with Al Qaeda that led the US to promote and support the invasion of Somalia, to crush the Islamic Courts Union there.

Certainly, the continued poverty of the ordinary Mauritanian people, in the face of growing oil revenues and a government which so far, despite its promises, has failed to ensure any significant re-distribution of wealth or mprovement in basic welfare, has led to a degree of radicalisation. So-called 'food riots' reveal how far ordinary people are angered by the failure of the new elected government to assure its people's well being, as well as being hard hit by rising food prices and continued poverty.

The implied 'social contract' in a democracy - that the people elect the government to ensure their wellbeing - has been broken yet again. Islam offers hope to young people, especially, as Armell Choplin rightly points out, to young harratin, and it also focuses the anger and disappointment. But this has nothing to do with terrorism and more to do with popular protest at government failure.