A MAN linked to Al-Qaeda and believed to have helped to mastermind the Madrid train bombings was overheard last month describing a plot for a woman to carry out a chemical or germ attack in America that he said would “wipe out an entire neighbourhood”. The Italian warrant for the arrest of Rabei Osman Sayed Ahmed, 32, an Egyptian seized in a suburb of Milan last week, details transcripts of bugged conversations and telephone calls in which he not only boasted of his involvement in the Spanish attack of March 11 but also spoke of future plans. The Spanish government...