We came here to find the new radical Islam which has become so popular since the Arab Spring. This is the house we are looking for. Going up a dark and slippery staircase, which smells of urine, sawdust and ammonia, we arrive at the third floor. We enter a darkened room, lit by a single dim light bulb hanging from the ceiling. A curtain is barely hiding the dirty toilet. A big couch, which also serves as a bed, occupies almost all the room. A 22-year-old man, Yusef, is sitting cross-legged on the couch. We have come to meet him before he leaves for Jihad in Syria. He is a Salafi Islamist, part of a movement that is fast becoming a major player in the region. This is not the pragmatic secularized Islam, nor the social democracy of the Muslim Brotherhood or of the moderate Ennahda movement (the Renaissance Party) whom the Western world found so reassuring after the Arab revolutions.