[The Conversation Africa] Kenya remains in a state of heightened alert following travel warnings by French, US and European Union officials of imminent terrorist attacks. Kenya has suffered deadly terror attacks claimed by the Somali Islamist group Al-Shabaab. As a result it has beefed up security. Oscar Gakuo Mwangi has studied Kenya's counter-terrorism policies and strategies. We asked him to unpack the intelligence behind terror alerts.