This undergraduate thesis tries to elaborate terrorism phenomenon which in recent decades become a major issue and a core threat for every aspect of human life. As its expansion to Asia including Southeast-Asia, countries in the region pointed out terrorism as great challenge for the security stability. In addition, especially Singapore as one of the Asian Tiger believes that this global threat is harmful either for individual, society, the nation or the international society. Thus, Singapore goal is to minimize the country’s susceptibility by propagating the strongest possible defences against terror attack, either for its regional security or its participation on “war on terror”. However, the Internal Security Act implemented by Singapore in the country face a lot pros and cons. In which, this law allows the government to act decisively to the threats in the region, including terrorism. From the cons side, The Internal Security Act considered will abolish the human rights and will be misused by the government. However, as the implementation of the law, Singapore reassure human rights will be respected and give evidences that could state Internal Security Act never been used for political purpose.