Economic sanctions have had a crippling effect on the Iranian economy. The lifting of those sanctions was a major part of the nuclear deal. The Trump administrations decision to re-impose the sanctions could lead to unintended consequences.
Islam is a major force in Iran, influencing all aspects of social and political life. Unlike most of its neighbors, Iran is primarily made up of Shia Muslims. Under the Shah, Iran was a secular, Western-leaning country. After the Islamic Revolution of 1979, however, Iran became an Islamic Republic, with ultimate authority in the hands of the Supreme Leader, an Islamic cleric.
Stuxnet is a type of cyber weapon known as a malignant worm. It is believed to have been developed jointly by the United States and Israel and was deployed in 2010 to disable Iranian nuclear facilities.