Over the past few years, Iran's state sponsorship of terrorism has increased dramatically to levels not seen since the late 1980s and early 1990s. Some of this is terrorism carried out by the regime's own operatives from the Islamic Revolutionary Guard Corps Qods Force, and some by the regime's closest militant ally, Hezbollah. Events in Syria today have further cemented this partnership, with dire consequences for regional and international security.
Even under the regime of President Rouhani, and even as Tehran engages in the P5+1 talks over its nuclear program, Iran continues to engage in these types of activities itself and sponsors the efforts of its partners.
Iran's Support for Terrorism Worldwide - The Washington Institute for Near East Policy