Top 15 Most dangerous people in the world

Ibrahim al-Asiri AKA Abu Saleh

The former chemistry student is an expert in making PETN bombs – a white, odourless powder that X-ray machines fail to detect. He designed the ‘underwear’ bomb used in an attempt to blow up a US plane in 2009.According to intelligence, he sent printer-bombs from Yemen destined for the US. He is teaching his techniques to al-Qaida apprentices and runs a branch of it in Quetta, Pakistan.