The Guardian – Concern about the prowess of al-Qaida’s bomb-maker in chief – and his willingness to work with Isis insurgents in Syria and Iraq – underlies the decision to increase security at British and other European airports. Ibrahim Hassan al-Asiri, a Saudi chemist who became a bomb-maker, has for years been high on America’s most-wanted list, because he is believed to be behind many audacious attempts to bring down transatlantic flights, using his skills as a chemist to devise increasingly imaginative ways to conceal explosives, with the best known being the “underwear” bomber. Continue reading