Abstract (eng)
The US-Iranian relationship has been marked by continuous tensions since the Islamic Revolution in 1979, with the Iranian nuclear programme being one of its major points of contention. While the US supported the programme in the Shah era, the US presidents, amongst them Obama and Trump, perceive it as a military operation for the development of nuclear weapons under the Mullah regime. As such a threat, the programme is described in their discourse to legitimize their foreign policy decisions.
This so-called securitisation of issues is central to the Copenhagen School of thought, whose constructivist understanding of security is based on the speech act, by which an existential threat to the referent object is outlined, that needs to be countered by extraordinary measures. The reversed process, de-securitisation, is also possible, even though it has gained less attention in academia.
The primary goal of the present thesis is to trace both of these processes in the presidential discourse regarding the Iranian nuclear programme. By combining discourse and content analysis the speeches of Presidents Obama and Trump are analysed, tracing the (de-)securitisation, its simultaneous enaction and consequences for policy decisions, focusing especially on the context of the 2015 nuclear deal, which regulated the Iranian nuclear programme.