March 3 - The IAEA reports that Iran’s stockpile has exceeded 1,000 kilograms of uranium enriched up to 4.5 percent and that Iran is enriching uranium using additional centrifuges at the Fordow facility.
April 22 - Iran launches its first military satellite using a new space-launch vehicle (SLV), the Qased. In doing so, Iran also reveals the existence of an Islamic Revolutionary Guard Corps- run military space program that operates in parallel to the country’s civilian space program.
April 29- Iran’s Bushehr nuclear power plant is refueled, as scheduled.
May 21 - The United States announced that it will withdraw from the Open Skies Treaty, a critical arms control verification treaty.