Following the intervention of the Kenya Defence Forces in Somalia in October 2011 in reaction to the increase in kidnappings on the Kenyan coast, the threat of terrorism in Kenya increased considerably. Initially the perception was that the threat originated from Somalia and that Somali nationals or Somali-Kenyans consequently committed attacks in Kenya. As arrests were made, Kenya was confronted with the reality that Kenyan nationals were responsible for the majority of these attacks. This sparked introspection and the need to understand where this threat originated. This paper aims to provide an overview of the threat of terrorism in Kenya; to consider the drivers of radicalisation, especially among the youth; and to propose counter-strategies that policymakers and security officials might adopt to prevent and counter radicalisation.