Which of the following is not a global threat?

The correct answer is Option 2 - Civil war

The idea of global security emerged in the 1990s in response to the global nature of threats such as global warming, international terrorism, and health epidemics like AIDS and bird flu and so on. No country can resolve these problems alone. And, in some situations, one country may have to disproportionately bear the brunt of a global problem such as environmental degradation.