1) Iran continues developing its nuclear program despite international pressure, raising concerns that it may be pursuing nuclear weapons rather than using nuclear technology for peaceful purposes. 2) The CIA director believes Iran wants to keep open the option of developing nuclear weapons. World leaders see Iran's nuclear program as a threat. 3) Iran is a major sponsor of terrorism, supporting groups like Hezbollah and Hamas, and the U.S. has designated Iran's Revolutionary Guard as a terrorist organization. Many countries are pressuring Iran through sanctions to stop its nuclear program and support of terrorism.