If you dissect this story of al shabaab further, you will notice that something is amiss. Firstly the purported members of the al shabaab arrested are not Somalis neither do they look like they have attended any madrasa. They are in fact Kenyans who have no reason of harming their fellow countrymen. Secondly, the tactics being used are alien to true terrorist organizations. We all know that mujahids are not cowards and they seek matyredom. Which terrorist throws a grenade then runs away? A grenade cant really make the damage that terrorists seek. If you can smuggle a grenade then it cant be hard to smuggle in stronger explosives like the ones that rock Mogadishu.